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"Uniqueness of the solution of the Cauchy weighted problem and a new energy formula." Izv. AN Arm. SSR, Matematika, English translation: Journal of Contemporary Math. Analysis -- (Armenian Academy of Sciences) 1991, vol.26, no.5, p.15--25.
"Cauchy-Kovalevsky theorem with given wronskians for singular differential equations". Izv. AN Arm. SSR, Matematika, English translation: Journal of Contemporary Math. Analysis -- (Armenian Academy of Sciences) 1991, Vol.26, No.1, p. 18--28.
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"An integral of the normal curvature and Plancherel's formula in 3 – dimensional complex integral geometry." Preprint N 149, Keldysh Inst. of Appl. Math. Acad. Of Sci. USSR, Moscow, 1989, 27 pp.(co-authors: Airapetian R.G., Graev M. I.,Graev M. M.). Russian.
"Initial value problem for certain singular hyperbolic equations and WKB-estimates for solutions." Differential equations (Minsk). 1989, vol. 25, no. 6, p. 1062--1064 (Russian).
"Plancherel’s formula associated with an admissible complex of straight lines in CPn." Izv. AN Arm. SSR, Matematika, English translation: Soviet Journal of Contemporary Math. Analysis -- (Armenian Academy of Sciences) 1988, Vol.23, no.1, p. 1--20 (co-authors: Gelfand I. M., Graev M. I., Airapetian R.G.).
"Weighted mean value theorems for the singularly pertubered Laplace equation." Izv. AN Arm. SSR, Matematika, English translation: Soviet Journal of Contemporary Math. Analysis -- (Armenian Academy of Sciences) 1988, Vol.23, no. 4, p. 20--33.
"On weighted Cauchy and Dirichlet problems for certain partial differential equations singular on the boundary." Izv. AN Arm. SSR, Matematika, English translation: Soviet Journal of Contemporary Math. Analysis -- (Armenian Academy of Sciences) 1988, Vol. 23, No.1, p. 1--20.
"On the initial value and mixed problems with prescribed wronskians for second order singular hyperbolic equations." Izv. AN Arm. SSR, Matematika, English translation: Soviet Journal of Contemporary Math. Analysis -- (Armenian Academy of Sciences) 1987, Vol. 22, No.4, p.23--44.
"Plancherel’s theorem for an integral transformation associated with pair of grassmanian manifolds." Izv. AN Arm. SSR, Matematika,English translation: Soviet Journal of Contemporary Math. Analysis -- (Armenian Academy of Sciences) 1984, Vol.19, No.6, p. 53-- 69 (coauthors: Gelfand I. M., Graev M. I., Airapetian R.G.).
"Plancherel’s theorem for an integral transformation associated with a complex of p-planes in CPn and Cn." Izv. AN Arm. SSR, Matematika, [English translation: Soviet Journal of Contemporary Math. Analysis -- (Armenian Academy of Sciences)1983, Vol.18, No.4, p. 21-- 32 (coauthors: Gelfand I. M., Graev M. I., Airapetian R.G.).
"Plancherel’s theorem for an integral transformation associated with a complex of p-dimensional planes in CPn." Soviet Math. Dokl. 1983, vol. 27, no.1, pp. 47--50 (coauthors: Gelfand I. M., Graev M. I., Airapetian R.G.).
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"On the initial value problem with given wronskians." Izv. AN Arm. SSR, Matematika, English translation: Soviet Journal of Contemporary Math. Analysis -- (Armenian Academy of Sciences) 1980, Vol.15, No.4, p.43--59
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