@article{ASNSP_1970_3_24_2_209_0,
     author = {Burak, T.},
     title = {On spectral projections of elliptic operators},
     journal = {Annali della Scuola Normale Superiore di Pisa - Scienze Fisiche e Matematiche},
     pages = {209--230},
     publisher = {Scuola normale superiore},
     volume = {Ser. 3, 24},
     number = {2},
     year = {1970},
     mrnumber = {279633},
     zbl = {0207.41301},
     language = {en},
     url = {http://www.numdam.org/item/ASNSP_1970_3_24_2_209_0/}
}