1. On the stability of stationary motion in the case of a characteristic equation with zero roots;ABAN'CHIN;Vestnik Leningr. Univ.,1960
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3. Stable systems of differential equations with integrable perturbation term;ANTOSIEWICZ;Jour. London Math. Soc.,1956
4. A survey of Lyapunov's second method;ANTOSIEWICZ;Contrs. to the theory of nonl. oscills.,1958
5. Some implications of Lyapunov's conditions for stability;ANTOSIEWICZ;Jour. Rat. Mech. Anal.,1954