TY - JOUR AU - Ottmar Loos TI - Automorphism Groups of Second Order Differential Equations. JO - Monatshefte für Mathematik PY - 1983 SP - 195 EP - 208 VL - 96 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MOMA_1983__96_178148/ ID - MOMA_1983__96_178148 ER -