@article{article9a453db0,
title   = {Strong surjectivity of maps from 2-complexes into the 2-sphere},
author = {Fenille, Marcio Colombo and Manzoli Neto, Oziride},
year = {2010},
doi = {10.2478/s11533-010-031-6},
journal   = {Central European Journal of Mathematics}
}