@article{GDZPPN002068869, title = {On Cheeger's inequality.}, journal = {Commentarii mathematici Helvetici}, volume = {68}, year = {1993}, pages = {599-621}, zbl = {0809.53049}, url = {http://dml.mathdoc.fr/item/GDZPPN002068869} }
Brooks, R.; Perry, P.; V, Petersen; P. On Cheeger's inequality.. Commentarii mathematici Helvetici, Tome 68 (1993) pp. 599-621. http://gdmltest.u-ga.fr/item/GDZPPN002068869/