TY - JOUR AU - Duggal, K. L. TI - Singular Riemannian Structures Compatible with π-Structures JO - Canadian mathematical bulletin PY - 1969 SP - 705 EP - 719 VL - 12 IS - 6 UR - http://geodesic.mathdoc.fr/articles/10.4153/CMB-1969-092-8/ DO - 10.4153/CMB-1969-092-8 ID - 10_4153_CMB_1969_092_8 ER -