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Cz. Bagiński
Some remarks on finite $p$-groups
Demonstratio Math. 14 (1981), no. 2, 279-285.
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K. G. Valeev, K. R. Yanglyaeva
On the construction and properties of the asymptotic family solutions of a difference equation
Izv. Nats. Akad. Nauk Resp. Kaz. Ser. Fiz.-Mat. (1981), no. 5, 5-17.
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K. R. Yanglyaeva
Estimate of proximity of solutions of a system of nonlinear difference equations
Control, reliability and navigation, Mordovia State University, 1981, pp. 29-31.
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K. R. Yanglyaeva
On the existence of the asymptotic family of solutions of nonlinear difference equations on Banach spaces
Nonlinear dynamic processes of physics and mechanics, Naukova Dumka, 1981, pp. 159-169.
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K. R. Yanglyaeva
On the theory of interpolated methods of the numerical integration
Ukr.NIINTI preprint no. 2349, Kiev, 1981.