TY - JOUR AU - Henryk Żołądek TI - On first integrals for polynomial differential equations on the line JO - Studia Mathematica PY - 1993 SP - 205 EP - 211 VL - 107 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/sm-107-2-205-211/ DO - 10.4064/sm-107-2-205-211 LA - en ID - 10_4064_sm_107_2_205_211 ER -