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N. P. Erugin, Linear Systems of Ordinary Differential Equations with Periodic and Quasiperiodic Coefficients [in Russian], Izd-vo AN BSSR, Minsk (1963). · Zbl 0119.30102 |
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E. Kamke, Handbook of Ordinary Differential Equations [Russian translation], IL, Moscow (1959). |
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M. A. Lavrent’ev, On a First-Order Differential Equation [in French], Math. Zeitschrift,23 (1925). |
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N. M. Matveev, Methods of Integrating Ordinary Differential Equations, Third Edition [in Russian], Vysshaya Shkola, Moscow (1967). · Zbl 0291.65014 |
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V. V. Nemytskii and V. V. Stepanov, Qualitative Theory of Differential Equations [in Russian], Gostekhizdat, Moscow-Leningrad (1949). |
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I. G. Petrovskii, Lectures on the Theory of Ordinary Differential Equations, Fifth Edition [in Russian], Nauka, Moscow (1964). |
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L. S. Pontryagin, Ordinary Differential Equations [in Russian], Fizmatgiz, Moscow (1961). · Zbl 0098.05502 |
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J. Sansone, Ordinary Differential Equations, Vols. 1 and 2 [Russian translation], IL, Moscow (1953-1954). |
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V. I. Smirnov, Course of Higher Mathematics, Fourth Edition, Vol.3, Part 2 [cmin Russian], Gostekhizdat, Moscow-Leningrad (1950). |
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V. V., Stepanov, Course in Differential Equations [in Russian], Gostekhizdat, Moscow (1953). |
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S. F. Feshchenko, N. I. Shkil’, and L. D., Nikolenko, Asymptotic Methods in the Theory of Linear Differential Equations [in Russian], Naukova Dumka, Kiev (1966). · Zbl 0141.28004 |
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P. F. Fil’chakov, Approximate Methods of Conformal Mapping [in Russian], Naukova Dumka, Kiev (1964). |
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P. F. Fil’chakov, ?On an Effective Method of Folding Koshi Problems for Nonlinear Differential Equations,? Dokl. Akad. Nauk UkrSSR, Ser. A, No. 1 (1967); ?On an Effective Method of Folding Boundary Problems for Nonlinear Orderly Differential Equations,? Dokl. Akad. Nauk UkrSSR, Ser. A, No. 2 (1967); ?On the Solution of a System of Nonlinear Differential Equations by Means of Powere Theory,? Dokl. Akad. Nauk UkrSSR, Ser. A, No. 9 (1967); ?On an Effective Method of Allotting Real Values for Ordinary Differential Equations,? Dokl. Akad. Nauk UkrSSR, Ser. A, No. 10 (1967); ?On the Construction of Integrals of Differential Equations not Solved with Reference to a Higher Step,? Dokl. Akad. Nauk, Ser. A, No. 4 (1969). |
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P. F. Fil’chakov, On One Method of Solving Systems of Algebraic or Transcendental Equations [in Ukrainian], Dokl. Akad. Nauk UkrSSR, Ser. A, No. 1 (1969). |
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P. F. Fil’chakov and Mi. I. Cinyavskii, On Solving the Fermi-Thomas Equation by Means of Power Series [in Ukrainian], Dokl. Akad. Nauk UkrSSR, Ser. A, No. 2 (1969). |
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I. Z. Shtokalo, Linear Differential Equations with Variable Coefficients (Asymptotic Methods and Criteria for Stability and Instability of Solutions) [in Russian], Izd-vo Akad. Nauk UkrSSR, Kiev (1960). |
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I. Z. Shtokalo, Operational Methods and Their Development in the Theory of Linear Differential Equations with Variable Coefficients [in Russian], Izd-vo Akad. Nauk UkrSSR, Kiev (1961). |