TY - JOUR AU - Sicheng Wang TI - The existence of maps of nonzero degree between aspherical 3-manifolds. JO - Mathematische Zeitschrift PY - 1991 SP - 147 EP - 160 VL - 208 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZ_1991__208_3_174307/ ID - MZ_1991__208_3_174307 ER -