Boichuk, A., & Covachev, V. (1998). Periodic solutions of impulsive systems with a small delay in the critical case of second order. Нелінійні коливання.
Chicago Style (17th ed.) CitationBoichuk, A.A, and V. Covachev. "Periodic Solutions of Impulsive Systems with a Small Delay in the Critical Case of Second Order." Нелінійні коливання 1998.
MLA (8th ed.) CitationBoichuk, A.A, and V. Covachev. "Periodic Solutions of Impulsive Systems with a Small Delay in the Critical Case of Second Order." Нелінійні коливання, 1998.
Warning: These citations may not always be 100% accurate.