SOLVABILITY PROBLEMS FOR A LINEAR HOMOGENEOUS FUNCTIONAL-DIFFERENTIAL EQUATION OF THE POINTWISE TYPE СтатьяBeklaryan L.A., Beklaryan A.L.Differential Equations. Том 53. 2017. С. 145-156
GROUPS OF LINE AND CIRCLE DIFFEOMORPHISMS. CRITERIA FOR ALMOST NILPOTENCY AND STRUCTURE THEOREMS СтатьяBeklaryan L.A.Sbornik Mathematics. Том 207. 2016. С. 1079-1099