@article{SJL_1974-1975___3_A7_0,
     author = {Pham The Lai},
     title = {Th\'eorie spectrale d'une classe d'op\'erateurs elliptiques d\'eg\'en\'er\'es non n\'ecessairement auto-adjoint},
     journal = {S\'eminaire Jean Leray},
     note = {talk:6},
     pages = {1--12},
     publisher = {Coll\`ege de France},
     number = {3},
     year = {1974-1975},
     language = {fr},
     url = {http://www.numdam.org/item/SJL_1974-1975___3_A7_0/}
}