@incollection{JEDP_1988____A15_0,
     author = {Mohamed, Abderemane and Nourrigat, Jean},
     title = {Borne inf\'erieure du spectre de l'op\'erateur de {Schr\"odinger}},
     booktitle = {},
     series = {Journ\'ees \'equations aux d\'eriv\'ees partielles},
     eid = {15},
     pages = {1--4},
     publisher = {Ecole polytechnique},
     year = {1988},
     zbl = {0682.35081},
     language = {fr},
     url = {http://www.numdam.org/item/JEDP_1988____A15_0/}
}