@article{CMH_1989__64_1_140172,
     author = {G\'erard Besson},
     title = {Propri\'et\'es g\'en\'eriques des fonctions propres et multiplicit\'e.},
     journal = {Commentarii mathematici Helvetici},
     pages = {542--588},
     year = {1989},
     volume = {64},
     number = {1},
     zbl = {0697.58056},
     url = {http://geodesic.mathdoc.fr/item/CMH_1989__64_1_140172/}
}