@article{GDZPPN002410966, title = {On the Weak Covering Homotopy Property.}, journal = {Mathematische Zeitschrift}, volume = {129}, year = {1972}, pages = {243-246}, zbl = {0223.55022}, url = {http://dml.mathdoc.fr/item/GDZPPN002410966} }
Waller, Derek A. On the Weak Covering Homotopy Property.. Mathematische Zeitschrift, Tome 129 (1972) pp. 243-246. http://gdmltest.u-ga.fr/item/GDZPPN002410966/