@article{GDZPPN002487810, title = {Two Isoperimetric Inequalities with Lattice Constraints.}, journal = {Monatshefte f\"ur Mathematik}, volume = {112}, year = {1991}, pages = {227-234}, zbl = {0737.52008}, url = {http://dml.mathdoc.fr/item/GDZPPN002487810} }
Wills, J.M.; Schnell, U. Two Isoperimetric Inequalities with Lattice Constraints.. Monatshefte für Mathematik, Tome 112 (1991) pp. 227-234. http://gdmltest.u-ga.fr/item/GDZPPN002487810/