@article{RM_1999_54_5_a2,
     author = {S. A. Nazarov},
     title = {The polynomial property of self-adjoint elliptic boundary-value problems and an algebraic description of their attributes},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {947--1014},
     publisher = {mathdoc},
     volume = {54},
     number = {5},
     year = {1999},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_1999_54_5_a2/}
}