TY - JOUR AU - Dumitru Cozma TI - Center problem for cubic systems with a~bundle of two invariant straight lines and one invariant conic JO - Buletinul Academiei de Ştiinţe a Republicii Moldova. Matematica PY - 2012 SP - 32 EP - 49 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/BASM_2012_1_a3/ LA - en ID - BASM_2012_1_a3 ER -