TY - JOUR AU - Rudolf, Boris TI - An existence and multiplicity result for a periodic boundary value problem JO - Mathematica Bohemica PY - 2008 SP - 41 EP - 61 VL - 133 IS - 1 PB - mathdoc UR - https://geodesic-test.mathdoc.fr/articles/10.21136/MB.2008.133946/ DO - 10.21136/MB.2008.133946 LA - en ID - 10_21136_MB_2008_133946 ER -