@article{GDZPPN002302098, title = {Minimum Girth of Spheres.}, journal = {Mathematische Annalen}, volume = {189}, year = {1970}, pages = {169-171}, zbl = {0176.10803}, url = {http://dml.mathdoc.fr/item/GDZPPN002302098} }
Schäffer, J.J. Minimum Girth of Spheres.. Mathematische Annalen, Tome 189 (1970) pp. 169-171. http://gdmltest.u-ga.fr/item/GDZPPN002302098/