Sarkisian, V.S., Sarkisian, S.V. and Shaboyan, A.F. (2001) “THE ANALYSIS OF VIBRATIONS OF CURVILINEAR TETRAGON WITH RECTILINEAR ANISOTROPY”, Proceedings of the YSU A: Physical and Mathematical Sciences, 35(1 (195), pp. 139–140. doi:10.46991/PYSUA.2001.35.1.139.