I- Articles in Refereed Journals

(1) A Microscopic Theory of The Einstein Optical Scattering Equs., R. K. Bullough A.-S. F. Obada, B. V. Thompson and F. Hynne, Chem. Phys. Lett. 2 (1968), 393.

(2) Dielectric Constants for The Cubic Molecular Crystal, R. K. Bullough and A.-S. F. Obada, Chem. Phys. Lett. 3 (1969), 114.

(3) The Binding Energy of Molecular Crystals, R. K. Bullough and A.-S. F. Obada, Chem. Phys. Lett. 3 (1969), 177.

(4) Optical Propagators and Properties of The Finite Molecular Crystal, A.-S. F. Obada and R. K. Bullough Physica 42 (1969), 475.

(5) Longitudinal Modes and Optical Rotation in The Finite Molecular Crystal, A.-S. F. Obada and R. K. Bullough Physica 42 (1969), 482.

(6) Theory of Radiation Reaction and Atom Self-energies: All-order Perturbation Theory of the Generlized Non-relativistic Lamb-shift, R. K. Bullough, P.J. Caudrey and A.-S. F. Obada, J. Phys. A7 (Maths. \& Gen.) (1974), 1647.

(7) On the Response of a System in a Field, A.-S. F. Obada, Bull. of Fac. Sc. K.A.U. 1 (1977), 101. 

(8) Response and Normal Modes of a System in a Field, A.-S. F. Obada, Proc. Mathl \& Physl.Soc.(Egypt), 45 (1978), 19.

(9) Resonances in The Electro-magnetic Interactions, A.B. Khalil and A.-S. F. Obada, Proc. Math. \& Phys. Soc. (Egypt) 46 (1978), 29. 

(10) Contributions of the Correlations Functions to The Optical Constants, A.-S. F. Obada, M. A. Allam and A.-R. A. El-Samman, Proc. Mathl.\& Physl. Soc. (Egypt), 46 (1978), 35.

(11) Electric and Magnetic Dipole Contributions to The Reaction Field Theory, A.-S. F. Obada and A. M. M. Abu-Sitta, Physica 93A (1978), 316

(12) Commutation Relations and The Magnetic-dipole Moment Effects in The Theory of Quantum Optics, A.-S. F. Obada, A. M. M. Abu-Sitta and M. H. Mahran, Proc. Mathl.\& Physl. Soc. (Egypt), 47 (1979), 33.

(13) Magnetic-dipole Effects in Super-radiance, A.-S. F. Obada, A. M. M. Abu-Sitta and M. A. El-Deberky, Proc. Mathl.\& Physl. Soc. (Egypt), 47 (1979), 55.

(14) A Theorical Investigation of Residual Stresses, A. K. Abdel-Latif and A.-S. F. Obada Bull. Fac. Sc. K.A.U. 3 (1979), 15.

(15) Electric- and Magnetic- dipole Contributions to a Theory of Radiation Reaction Field Theory and Atoms Self-energies:- An Operator Reaction Field, A.-S. F. Obada and M. H. Mahran, Physica 120 A (1983), 31.

(16) On The Generalized Linear Response Functions, A.-S. F. Obada, A. M. M. Abu-Sitta and F. K. Faramawy, ICTP. Preprint IC/83/23. Published as Physica 130A (1985), 292.

(17) Application of the Generalized Boson Operators to Boson-Fermion Systems, A.-S. F. Obada and M. M. A. Ahmad, Optica Acta 32 (1985), 901.

(18) Multiphoton Transitions in the Tavis-Cummings Model, M.S. Abdalla, S.S. Hassan and A.-S. F. Obada, Phys. Rev. A 34 (1986), 4869.

(19) Photon and Atomic statistics in Generalized Jaynes-Cummings Models , A.-S. F. Obada and A. M. Abdel-Hafez, Physica 139 A (1986), 593.

(20) N-level Atom, and N-1 modes: Statistical Aspects and Interaction with Squeezed Light, A. M. Abdel-Hafez, M. M. A. Ahmad and A.-S. F. Obada, Phys. Rev. A 35 (1987), 1634.

(21) A Non-Linear Response Theory: I-General Formulation, A.-S. F. Obada,  S.S.Hassan and M. H. Mahran, Physica 142A (1987), 601.

(22) A Non-Linear Response Theory: II-Generalized Dispersion Relations, S.S.Hassan, M. H. Mahran and A.-S. F. Obada, Physica 142A (1987), 619.

(23) Time Evolution for a 3-Level Atom in Interaction with 2 Modes, A.-S. F. Obada, and A. M. Abdel-Hafez, J. Mod. Opt. 34 (1987) 665.

(24) N-Level Atom and N-1 Modes: Generalized Models and Multiphotons, A. M. Abdel-Hafez, A.-S. F. Obada and M. M. A. Ahmad, Physica 144A (1987), 530.

(25) N-Level Atom and N-1 Modes: An Exactly Solvable Model with Detuning and Multi-Photons, A. M. Abdel-Hafez, A.-S. F. Obada and M. M. A. Ahmad, J. Phys. Math. Gen. A 20 (1987) L359.

(26) Bunching and Antibunching  Effects in a System of N Two-Level Atoms, M. H. Mahran and A.-S. F. Obada, J. Mod. Opt. 34 (1987) 1471.

(27) The Dynamics of the Jaynes-Cummings Model in the Logarithmic State, M. H. Mahran and A.-S. F. Obada, J. Mod. Opt. 35 (1988) 1847.

(28) Quantum Effects in the 3-Level 2-Mode System, M. H. Mahran, A.-R. A. El-Samman and A.-S. F. Obada, J. Mod. Opt. 36 (1989) 53.

(29) A Generalized Jaynes-Cummings Model for the N-Level and N-1 Modes, A. M. Abdel-Hafez, A. M. M. Abu-Sitta and A.-S. F. Obada, Physica 156A (1989), 689.

(30) Atomic Level Shifts in the Generalized Squeezed Coherent State, M.H. Mahran and A.-S. F. Obada, Phys. Rev. A 40 (1989), 2215.

(31) Amplitude-Squared Squeezing in the Jaynes-Cummings Model, M.H. Mahran and A.-S. F. Obada, Phys. Rev. A 40 (1989), 4476.

(32) Amplitude-Squared Squeezing in the Multiphoton JCM, M.H. Mahran and A.-S. F. Obada, Phys. Rev. A 42 (1990), 1718.

(33) Dynamics of a Non-linear JCM, M.S. Abdalla, M.M.A. Ahmad and A.-S. F. Obada, Physica A 162 (1990), 215.

  (34) Multimode and Multiphoton Processes in Non-Linear Jaynes-Cummings Model, M.S. Abdalla, M.M.A. Ahmad and A.-S. F. Obada, Physica A 170 (1991), 393.

 (35) Effect of Atomic Coherence on Squeezing, A.-S. F. Obada, and A. M. Abdel-Hafez, Phys. Rev. A 43 (1991), 4161.

(36) Amplitude Squared Squeezing in the Multiphoton Jaynes-Cummings Model: Effect of Phases, A. M. Abdel-Hafez and A.-S. F. Obada, Phys. Rev. A 44 (1991), 6017.

  (37) Non-Classical Effects in Jaynes-Cummings Model: Effect of Phases, A. M. Abdel-Hafez and A.-S. F. Obada, Physica A 180 (1992), 205.

(38) The Amplitude Squared, Frequency Sum and Difference Squeezing in the Interaction of Two Quantized Field Modes with Two-Level Atom, A. M. Abdel-Hafez and A.-S. F. Obada, Physica Scripta 46 (1992), 27.

(39) Amplitude Squared and Frequency-Sum Squeezing in a 3-Level Atom, A.-S. F. Obada, and A. M. Abdel-Hafez, Opt. Comm. 91 (1992), 99.

(40) Effect of Detuning and Coherence Phase on Normal Squeezing, A. M. Abdel-Hafez and A.-S. F. Obada, Ann. Phys.Fr. 17 (1992), 337.

(41) Periodic Squeezing in the Travis-Cummings Model, M.S.Abdalla, S. S. Hassan, A.-S. F. Obada and H. A. Batarfi, J. Mod. Optics 40 (1993), 1351.

(42) Variation from Number-to Chaotic- state Fields;A Generalized Geometric State,A.-S. F. Obada,S. S. Hassan,R. R. Puri and M.S.Abdalla, Phys. Rev. A 48(1993) 3174

(43) Non-classical Effects in Two Two-level Atoms and a Single Mode,A.-S. F.Obadaand Z.M.Omar, J. Egypt Math. Soc.1 (1993) 63.

 (44) Statistical Properties of the Even Binomial State. M.S.Abdalla,M.H.Mahran andA.-S. F. Obada Jour. Mod. Optics 41 (1994)1889.

 (45) Three-Photon Micromaser, A.-S. F. Obada,A.M.M.Abu-Sitta and O.M. Yassin,J. Egypt Math. Soc. 2.(1994) 103.

 (46) Field Distribution in a Generalized Geometric Distribution,H.A. Batarfi,M.S.Abdalla, and S.S.Hassan, and A.-S. F. Obada, Phys. Rev. A51 (19952644.

 (47) Phase Properties of Multiphoton Jaynes-Cammings Model.A.M. Abdel-Hafez,A.-S. F. Obada and A.H.Essawy; Ann Phys.Fr. 20(1995) pp 47-61.

 (48) Dynamics of Two Three-level Atoms Interacting with Two Modes ofRadiationA.-S. F. Obada and Zeinab M.Omar, J.Egypt Math.Soc. 3 (1995) pp.65-74.

 (49) Dynamics of the Even-Binomial State, A.-S. F. Obada, M.H. Mahran F.A.A. El-Orany and M.Sebawe Abdalla, Int. J. Theor Phys.35(1996) pp 1393-1404.

 (50) Some Statistical Properties of the Even and Odd Negative Binomial States, Amitabh Joshi and A.-S. F. Obada J. Phys. A. 30(Math. \& Gen.)(1997) pp 87-97.

 (51) Phase Properties of Coherent Phase and Generalized Geometric State, A.-S. F.Obada, O.M.Yassin and Stephen M. Barenett, Jour. Modern Optics 44 (1997) pp149-161.

 (52) Properties of Superposition of Squeezed States,A.-S.F. Obada and ZeinabM.Omar, Phys. Lett A227 (1997)pp 349-356.

 (53)S-parameterizedquasiprobability and linear amplifier, A.-S. F. Obada andG. M.Abd Al-Kader, J. Phys. B: 30 (1997) pp 5109-5121

(54)Squeezed Displaced Fock states and non-diagonal P-representation, A.-S. F.Obada and G. M. Abd Al-Kader,J. Mod. Optics Vol. 45 (1998) pp 713-734

 (55)S-parameterized quasiprobability for squeezed displaced Fock states , A.-S. F.Obada andG. M. Abd Al-Kader, Nonlinear Optics Vol.19 (1998) pp 143-156

 (56) Phase Properties of a Jaynes-Cummings Model with Stark Shift and Kerr Medium, A.-S. F. Obada A. M. Abdel-Hafez and M. Abdelaty, Eur.Phys. J. D3(1998) pp289-294

 (57)Squeezed states andnon-diagonal P-representation, A.-S. F. Obada and G. M.AbdAl-Kader, International Journal of Theoretical Physics Vol. 37 No. 8 (1998)pp2207-2232

 (58)Linear amplifier and quasiprobability distribution functions for the squeezed displaced Fock states , A.-S. F. Obada andG. M. Abd Al-Kader, International Journal of Theoretical Physics Vol. 37 No. 8 (1998)pp2233-2260

 (59) Superposition of displaced Fock states: Properties and Generation , A.-S. F.ObadaandG. M. Abd Al-Kader, Acta Physica Slovaca Vol. 48 no.5 (1998)pp583-594

 (60) Statistical properties and dynamical behavior in odd binomial states,F. A. A.El-Orany M. H. Mahran A.-S. F. Obada, Acta Univ. Palacki. Olomuc. Fac. Rer.Nat. Physica 37 (1998) pp39-60

 (61) Influence of Intrinsic Decoherence on Non-classicaleffects in the non-degenerateBimodel Multi-quanta JCM ,A.-S. F. Obada, A. M. Abdel-Hafez andH. A. Hessian, J. Phys. B 31 (1998) pp5085

 (62)Superposition of squeezed displacedFock states: Properties and Generation , A.-S.F. Obada andG. M. Abd Al-Kader, J. Mod. Optics Vol. 46 (1999) pp263-278

 (63) Statistical properties of the phased generalized binomial state,M. H. Mahran, M.S.Abdalla, A.-S. F. Obada , and F. AA. El-Orany Nonlinear Opt. vol. 19 , (1998)pp. 189

 (64) Phase properties of a field mode interacting with a three-level atom with Kerr nonlinearity, A.-S. F. Obada, A. M. Abdel-Hafez, A. H. Essawy, and M. Abdelaty, Physica  Scripta Vol 60, (1999) pp 329-334.

(65) Intrinsic decoherence on non-degenerate two-quanta Jaynes-Cummings model,A.-S. F. Obada , A M Abdel-Hafez and H A HessianActa Physica Slovaka vol49 No. 3, (1999), pp381-398.

(66) Statistical properties of the odd Binomial States with Dynamical Applications, F.A.A. El-Orany,M. H. Mahran, A.-S. F. Obada andM. S. Abdalla,Int. J. of Theor.Phys. vol. 38 ,(1999)pp. 1493-1520.

 (67) Phase properties of Two-Mode Opticl fields with Stark Shift and Kerr nonlinearity,A.-S. F. Obada A. M. Abdel-Hafez, A. H. Essawy, and M.Abdelaty ,J. Phys. Soc. of Japan, Vol. 68, (1999)pp2269-2275

(68) Superposition of squeezed coherent states: Properties and Generation , A.-S. F.Obada andG. M. Abd Al-Kader, Int. J. Mod. Phys. Vol. 13, No. 17 (1999)pp2299-2312