TY - JOUR AU - Neuman, FrantiĊĦek TI - On Halphen and Laguerre-Forsyth canonical forms of linear differential equations JO - Archivum mathematicum PY - 1990 SP - 147 EP - 154 VL - 26 IS - 2-3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/ARM_1990__26_2-3_a11/ LA - en ID - ARM_1990__26_2-3_a11 ER -