@article{1077475195, author = {Potts, D. H.}, title = {Generalized Laplacians of higher order}, journal = {Duke Math. J.}, volume = {15}, number = {1}, year = {1948}, pages = { 947-951}, language = {en}, url = {http://dml.mathdoc.fr/item/1077475195} }
Potts, D. H. Generalized Laplacians of higher order. Duke Math. J., Tome 15 (1948) no. 1, pp. 947-951. http://gdmltest.u-ga.fr/item/1077475195/