TY - JOUR AU - Iurie Calin AU - Valeriu Baltag TI - Sufficient $GL(2, \mathbb{R})$-invariant center conditions for some classes of two-dimensional cubic differential systems JO - Buletinul Academiei de Ştiinţe a Republicii Moldova. Matematica PY - 2019 SP - 127 EP - 136 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/BASM_2019_2_a7/ LA - en ID - BASM_2019_2_a7 ER -