TY - JOUR AU - S. V. Dyatlov TI - The Sectional Curvature Remains Positive When Taking Quotients by Certain Nonfree Actions JO - Matematičeskie trudy PY - 2007 SP - 62 EP - 91 VL - 10 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MT_2007_10_2_a2/ LA - ru ID - MT_2007_10_2_a2 ER -