TY - JOUR AU - Singh, Balwant TI - A numerical criterion for the permissibility of a blowing-up JO - Compositio Mathematica PY - 1976 DA - 1976/// SP - 15 EP - 28 VL - 33 IS - 1 PB - Noordhoff International Publishing UR - http://www.numdam.org/item/CM_1976__33_1_15_0/ UR - https://zbmath.org/?q=an%3A0335.14003 UR - https://www.ams.org/mathscinet-getitem?mr=419435 LA - en ID - CM_1976__33_1_15_0 ER -