Ciubotaru Stanislav

Publications in Math-Net.Ru

1. The Lyapunov quantities and the center conditions for a class of bidimensional polynomial systems of differential equations with nonlinearities of the fourth degree
   
   Bul. Acad. Ştiinţe Repub. Mold. Mat., 2017, no. 2,  112–130
2. Rational bases of $GL(2,\mathbb R)$-comitants and of $GL(2,\mathbb R)$-invariants for the planar system of differential equations with nonlinearities of the fourth degree
   
   Bul. Acad. Ştiinţe Repub. Mold. Mat., 2015, no. 3,  14–34