TY - JOUR AU - Krupka, Demeter TI - A map associated to the Lepagian forms on the calculus of variations in fibred manifolds JO - Czechoslovak Mathematical Journal PY - 1977 SP - 114 EP - 117 VL - 27 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1977.101449/ DO - 10.21136/CMJ.1977.101449 LA - en ID - 10_21136_CMJ_1977_101449 ER -