TY - JOUR AU - D. V. Znoiko TI - Free products of networks and free symmetrizers of graphs JO - Sbornik. Mathematics PY - 1975 SP - 463 EP - 480 VL - 27 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/SM_1975_27_4_a1/ LA - en ID - SM_1975_27_4_a1 ER -