@article{BSMF_1999__127_1_25_0,
     author = {Delyon, Bernard and Delyon, Fran\c{c}ois},
     title = {Generalization of von {Neumann's} spectral sets and integral representation of operators},
     journal = {Bulletin de la Soci\'et\'e Math\'ematique de France},
     pages = {25--41},
     publisher = {Soci\'et\'e math\'ematique de France},
     volume = {127},
     number = {1},
     year = {1999},
     doi = {10.24033/bsmf.2340},
     mrnumber = {2000e:47017},
     zbl = {0937.47004},
     language = {en},
     url = {http://archive.numdam.org/articles/10.24033/bsmf.2340/}
}