TY - JOUR AU - Natalia Gherstega TI - Functional bases of centro-affine invariants for the three-dimensional quadratic differential systems JO - Buletinul Academiei de Ştiinţe a Republicii Moldova. Matematica PY - 2006 SP - 57 EP - 64 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/BASM_2006_1_a6/ LA - en ID - BASM_2006_1_a6 ER -