@incollection{XUPS_2004____25_0, author = {Colin de Verdi\`ere, Yves}, title = {Sur le spectre des op\'erateurs {de~type~Schr\"odinger} sur les graphes}, booktitle = {Graphes}, series = {Journ\'ees math\'ematiques X-UPS}, pages = {25--54}, publisher = {Les \'Editions de l{\textquoteright}\'Ecole polytechnique}, year = {2004}, doi = {10.5802/xups.2004-02}, zbl = {1111.47030}, language = {fr}, url = {http://archive.numdam.org/articles/10.5802/xups.2004-02/} }