2004  Present
[1]Rizk Yassen .Nonlinear Wave Interaction in Magnetized plasma with twoTemperature Kappa –Distributed Electrons. International Journal of Applied Engineering Research Volume .12,No .24(2017) 140014007.
2RizkYassen and Mariam Algarni,The ThreeCenter Hybrid and FourCenter Electron Repulsion Integrals over SlaterType Orbitals Using Guseinov RotationAngular Function Int. J. Contemp. Math. Sciences, Vol. 7, No. 39(2012) 19031907. RizkYassen and Mariam Algarni,The Multicenter Integrals over SlaterType Orbitals in HartreeFockRoothaan Equations Using Guseinov RotationAngular Function.Int.J. Contemp. Math. Sciences, Vol. 7, No. 27(2012) 13251335.


4RizkYassen and Mariam Algarni,Analytical Evaluation of TwoCenter Kinetic Energy Integral for SlaterType Orbitals Using Guseinov RotationAngular Function .Int.J. Contemp. Math. Sciences, Vol. 5, No. 44 (2010) 21892200. 5RizkYassen and Mariam Algarni,Analytical evaluation of multicenter nuclear attraction integrals for Slatertype orbital's using Guseinov rotationangular function .Int. J. Contemp. Math. Sciences, Vol. 5, No. 27 (2010) 1309  1321.
6Awad EL –Gohary and Rizk Yassen ,Chaos and optimal control of a coupled dynamo with different time horizons ,Chaos,Solutions and Fractals , Vol 41,No 2 (2009) 698710.


7Awad EL –Gohary and Rizk Yassen,Adaptive control and synchronization of a coupled dynamo system with uncertain parameters, Chaos, Solitions and Fractals 29 (2006) 1085 1094.
8R.F. Yassen,Expressions for One  and Two – Center Electron Density and its Application to Some Multi Center Integrals. Proc. Math. Phys. Soc. Egypt, No.73, pp.183192, (1998). 9R.F. Yassen,An analytical evaluation of twocenter integrals containing the Slatertype orbitals (STO’s) and the electron correlation multiplier , with k being a nonnegative integer .Asian Journal of Physics, Vol 7, No 1, pp.145151, (1998).
10R.F. Yassen,On the oneelectron multicenter integrals in Roothaan equation’s over Slatertype orbitals and its applications. Asian Chemistry Letters, Vol 2, No.4, pp.141154, (1998).
11 I.I. Guseinov and R.F. Yassen,Evaluation of Overlap Integrals with the Same Screening Parameters of SlaterType Orbitals Using Gegenbauer Polynomials. Proc. Math. Phys. Soc. Egypt, No.72, pp.97 103, (1997).
12 I.I. Guseinov and R.F. Yassen,Unified Treatment of TwoCenter Coulomb, and hybrid Integrals over SlaterType Orbitals using Neumann Expansion. Proc. Math. Phys. Soc. Egypt, No.72, pp.14, (1997).
13 I.I. Guseinov and R.F. Yassen,Unified Treatment of TwoCenter Coulomb, Hybrid, and Exchange Integrals over Slater Type Orbitals. International Journal of Quantum chemistry, vol. 54, 197199, (1995).
14 I.I. Guseinov and R.F. Yassen,Unified Treatment of TwoCenter Coulomb, and hybrid Integrals with SlaterType Orbitals using auxiliary functions. Journal of Molecular Structure (Theochem) 339, 243 244, (1995).
15 F.H.Pashaev and R.F. Yassen,The expansion of one –center electron density in terms of SlaterType Orbital. Baku, phys –Math Sec, 1 (1992)171173.
16 R.F. Yassen,Solution of the HatreeFock – Roothaan equations for some atoms. Baku, phys –Math Sec, 1525(1990)110.
17 I.I. Guseinov and R.F. Yassen,Some applications of the HatreeFock – Roothaan equations for some atoms with Slater Type Orbitals.Baku, phys –Math Sec (1990)36.
18 R.F. Yassen and F.H.Pashaev,Some applications of the correlation method for atomic function, Baku, phys –Math Sec (1990)3741.

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