Contributed Presentations / Published Proceedings / Technical Reports

		Matching LTB and FRW spacetimes through a null hypersurface, gr-qc/0702132 (co-author, S. Khakshournia)
		Structured FRW universe based on junction along the past light cone, astro-ph/0702282 (co-authors: Sh Khosravi, E. Kourkchi, and Yashar Akrami)
		Modification of averaging process in GR: Case study flat LTB, arXive: 07092558 (co-authors: Sh Khosravi, E. Kourkchi, and Yashar Akrami)
		Structured FRW universe leads to acceleration: a non-perturbative approach, astro-ph/0512605
		"On the Thin Wall Limit of Thick Planer Domain Walls", 2005, Submitted to Gravitation and General relativity, gr- qc/0505073 (Co- author: Sima Ghassemi, Samand Khakshournia)
		Casimir Energy for Self-interacting Scalar Field in a Spherical Shell, 2002, hep-th/0201213 (Co-author: M. Setare).
		Casmir Action for Self-Interacting Scalar Field in 3-Spherical Shell, 2002, hep-th/0201213 (Co-author: M. Setare).
		Junction Equations for Two General Spherically Symmetric Spacetimes and the Distributional Method, 1999, hep-th/ 9911076 (Coauthor: S. Khakshournia).
		Application of Colombeau's Generalized Functions to Cosmological Models with Signature Change (Co-author: K. Nozari). Proceeding of ISMC, Potsdam, March 30-April 4, 1998, M. Rainer and H.-J. Schmidt (Eds), World Scientific PC, Singapore, p.
		Rotation of Plane of Polarization of an Electromagnetic Wave Progagating over Cosmological Distances in "Finite Rotating Universe" Scenario, gr-qc/9710028. (Coauthor: K. Nozari). Paper presented at the seminar "Kosmische Rotation". Berlin 1998.
		Rotation of Plane of Polarization of an Electromagnetic wave Progagating over Cosmological Distances in "Finite Rotating Universe" Scenario, Abstracts of Contributed Papers, 1997, Pune, India.
		Distributional Approach to Signature Change, Abstracts of Contributed Papers, GRI5, Pune, India.
		Wave Function of a Decupling Model of the Universe, Abstracts of Contributed Papers, GRI5, 1997, Pune, India.
		A new Class of Inhomogeneous Cosmological Solutions of Einsteins Equations, Preprint, Potsdam University, Math. Inst., 1996.
		Equivalent Lagrangians and Quantization, Preprint, Potsdam University, Math Inst., 1996.
		A New Class Of Inhomogenuous Solutions, Abstracts of Contributed papers, Intern. Symposium on Cosmology, Madras, India, 1994.
		Cylindrically Symmetric Thin Walls, Abstracts of Contributed Papers, Intern. Conf. On Grav. & Cosmology, Ahmedabad, India, 1991.
		Gravitational field of Static Domain Walls, Sharif University of Technology Report, 1990.
		Equivalence of Transport- and Radar Synchrony in General relativity. Abstracts of Contributed Papers, GR12, 1989.
		Test Theory of Special Relativity: What It Is and Why We Need It, 1988, ICTP Internal Report, IC/88/55.
		Distribution Function of a Collisionless Gas in the Most Symmetric Space - Times. Abstracts of Contributed Papers, Intern. Conf. On Grav. & Cosmology, Goa, India, 14-19 Dec. 1987.
		Introduction to Cosmology, Paper Presented at Spring School on Cosmology, Amir-Kabir University of Technology, Tehran, Iran, 1986.
		Distribution Function of a Dilute Gas In de Sitter Space-Time, Abstracts of Contributed Papers GR11, 1986.
		Finite Fluid Spheres are too Rigid to be Purturbed. Abstracts of Contributed Papers, GR9, Vol. 2, 1980.
		Alternative Two-Tensor Theory of Gravitation. Abstracts of Contributed Papers, Topical Meeting on Gravitation and Field Theory, 13-16 July, 1971, ICTP.