TY - JOUR AU - Carlos Lizama AU - Rodrigo Ponce TI - Periodic solutions of degenerate differential equations in vector-valued function spaces JO - Studia Mathematica PY - 2011 SP - 49 EP - 63 VL - 202 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/sm202-1-3/ DO - 10.4064/sm202-1-3 LA - en ID - 10_4064_sm202_1_3 ER -