@article{1102645825, author = {Higgins, Peter M.}, title = {A short proof of Isbell's zigzag theorem.}, journal = {Pacific J. Math.}, volume = {146}, number = {2}, year = {1990}, pages = { 47-50}, language = {en}, url = {http://dml.mathdoc.fr/item/1102645825} }
Higgins, Peter M. A short proof of Isbell's zigzag theorem.. Pacific J. Math., Tome 146 (1990) no. 2, pp. 47-50. http://gdmltest.u-ga.fr/item/1102645825/