Reduction principle in the theory of stability of linear differential equations
English version (Springer): Ukrainian Mathematical Journal 20 (1968), no. 5, pp 563-568.
Citation Example: Belan E. P., Mitropolskiy Yu. A. Reduction principle in the theory of stability of linear differential equations // Ukr. Mat. Zh. - 1968. - 20, № 5. - pp. 654–660.
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