1.
COZMA D, DRUČšA R. INTEGRABILITY CONDITIONS FOR LOTKA-VOLTERRA DIFFERENTIAL SYSTEM WITH A BUNDLE OF TWO INVARIANT STRAIGHT LINES. ActaEX [Internet]. 2018Dec.20 [cited 2021Oct.20];6(2):31-0. Available from: https://revista.ust.md/index.php/acta_exacte/article/view/366