TY - JOUR AU - Neuman, František TI - Categorial approach to global transformations of the $n$-th order linear differential equations JO - Časopis pro pěstování matematiky PY - 1977 SP - 350 EP - 355 VL - 102 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.21136/CPM.1977.108526/ DO - 10.21136/CPM.1977.108526 LA - en ID - 10_21136_CPM_1977_108526 ER -