For citations:
Demyankov N.A. About Two Finite-Dimensional Approximations of the Periodic Boundary Value Problem. Modeling and Analysis of Information Systems. 2011;18(3):63-74. (In Russ.)
Demyankov N.A. About Two Finite-Dimensional Approximations of the Periodic Boundary Value Problem. Modeling and Analysis of Information Systems. 2011;18(3):63-74. (In Russ.)