Metod funk︠t︡siĭ L︠i︡apunova v analize dinamiki sistem - Matrosov, Vladimir Mefodʹevich; Anapolʹskiĭ, L. ︠I︡U. (Leonid ︠I︡Ukelevich) (Izd-vo "Nauka," Sibirskoe otd-nie, 1987)