@article{GDZPPN002065037, title = {Cheeger's inequality with a boundary term.}, journal = {Commentarii mathematici Helvetici}, volume = {58}, year = {1983}, pages = {347-354}, zbl = {0524.58046}, url = {http://dml.mathdoc.fr/item/GDZPPN002065037} }
Huxley, M.N. Cheeger's inequality with a boundary term.. Commentarii mathematici Helvetici, Tome 58 (1983) pp. 347-354. http://gdmltest.u-ga.fr/item/GDZPPN002065037/