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Translated from Ukrainekii Matematicheskii Zhurnal, Vol. 34, No. 1, pp. 43–49, January–February, 1982.
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Kulik, V.L. Quadratic forms and dichotomy of solutions of systems of linear differential equations. Ukr Math J 34, 36–41 (1982). https://doi.org/10.1007/BF01086131
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DOI: https://doi.org/10.1007/BF01086131