TY - JOUR AU - I. V. Savel'ev TI - The structure of the set of singular points of piecewise-linear branched coverings of manifolds JO - Izvestiya. Mathematics PY - 1986 SP - 549 EP - 573 VL - 27 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IM2_1986_27_3_a6/ LA - en ID - IM2_1986_27_3_a6 ER -