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Translated fromSibirskii Matemaiicheskii Zhurnal, Vol. 36, No. 5, pp. 1194–1207, September–October, 1995.
In conclusion, the author expresses her gratitude to V. I. Kostin for help and sound advice, to S. K. Godunov for the observation that resulted in the structure of § 1 of the present article and led to appearance of the systems of equations (2), (9), and to the referee who drew the author's attention to the interesting articles [9, 10].
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Shtykel', T.L. To the theory of degenerate systems of ordinary differential equations. Sib Math J 36, 1035–1047 (1995). https://doi.org/10.1007/BF02112544
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DOI: https://doi.org/10.1007/BF02112544