TY - JOUR TI - Instructional Conference on Differential Equations JO - Canadian mathematical bulletin PY - 1967 SP - 169 EP - 169 VL - 10 IS - 1 UR - http://geodesic.mathdoc.fr/articles/10.1017/S0008439500027934/ DO - 10.1017/S0008439500027934 ID - 10_1017_S0008439500027934 ER -