@article{GDZPPN002034980, title = {Mountain climbing: an alternate proof.}, journal = {Aequationes mathematicae}, volume = {28}, year = {1985}, pages = {132-134}, zbl = {0561.39005}, url = {http://dml.mathdoc.fr/item/GDZPPN002034980} }
McKiernan, M.A. Mountain climbing: an alternate proof.. Aequationes mathematicae, Tome 28 (1985) pp. 132-134. http://gdmltest.u-ga.fr/item/GDZPPN002034980/