Voir la notice de l'article provenant de la source Math-Net.Ru
@article{MAT_1969_13_6_a4, author = {L. V. H\"ormander}, title = {The spectral function of an elliptic operator}, journal = {Matematika}, pages = {114--137}, publisher = {mathdoc}, volume = {13}, number = {6}, year = {1969}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MAT_1969_13_6_a4/} }
L. V. Hörmander. The spectral function of an elliptic operator. Matematika, Tome 13 (1969) no. 6, pp. 114-137. http://geodesic.mathdoc.fr/item/MAT_1969_13_6_a4/