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Effect of periodic environmental fluctuations on the Pearl–Verhulst modelSvitlana P. Rogovchenko; Yuri V. Rogovchenko · 2009
On oscillation of nonlinear second-order differential equations with damping termOctavian G. Mustafa; Svitlana P. Rogovchenko; Yuri V. Rogovchenko · 2004
Conditional stability for a class of second-order differential equationsCezar Avramescu; Octavian G. Mustafa; Svitlana P. Rogovchenko; Yuri V. Rogovchenko · Applied Mathematics Letters · 2005