Literature cited
A. G. Rutkas, “Cauchy's problem for the equation Ax'(t) +Bx(t) = f(t),” Differents. Uravn.,11, No. 11, 1996–2010 (1975).
K. A. Bagrinovskii, “On smooth solutions of certain planning problems,” in: Problems of National-Economy Optimum, Ekonomika, Moscow (1969), pp. 300–325.
V. S. Korolyuk and A. F. Turbin, Semi-Markov Processes and Their Applications [in Russian], Naukova Dumka, Kiev (1976).
V. A. Eremenko, “On reducing a linear system of differential equations with a singular matrix in the derivatives,” Ukr. Mat. Zh.,32, No. 2, 168–174 (1980).
Yu. A. Mitropol'skii and A. M. Samoilenko, “Some problems in the theory of multifrequency oscillations,” Preprint 77.14, Institute of Mathematics, Academy of Sciences of the Ukrainian SSR, Kiev (1977).
A. M. Samoilenko, “Preservation of an invariant torus under perturbations, ” Izv. Akad. Nauk SSSR, Ser. Mat.,34, No. 6, 1219–1240 (1970).
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Translated from Ukrainskii Matematicheskii Zhurnal, Vol. 32, No. 6, pp. 746–753, November–December, 1980.
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Kulik, V.L., Eremenko, V.A. Quasiperiodic solutions of a linear system of differential equations with a singular matrix in the derivatives. Ukr Math J 32, 502–508 (1980). https://doi.org/10.1007/BF01087179
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DOI: https://doi.org/10.1007/BF01087179