E. L. Zhukovskii ,   V. G. Mednitskii ,   Yu. V. Mednitskii ,   V. M. Kolbanov Journal of Computer and System Sciences Intrnational , Vol.39 No.4 , 01.2000 , p. 601-608, language: английский ISSN 1064-2307  Аннотация Existence conditions and the characteristic features of solutions that grow in time at a constant rate are studied for one type of stationary linear systems.  Ключевые слова the J. von Neumann problem, stationary linear systems