@article{MAT_1960_4_3_a3,
     author = {M. Schechter},
     title = {Coerciveness of linear partial differential operators for functions satisfying zero {Dirichlet-type} boundary data},
     journal = {Matematika},
     pages = {57--78},
     year = {1960},
     volume = {4},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MAT_1960_4_3_a3/}
}