@article{1103035962, author = {Leaf, G. K.}, title = {A spectral theory for a class of linear operators.}, journal = {Pacific J. Math.}, volume = {13}, number = {4}, year = {1963}, pages = { 141-155}, language = {en}, url = {http://dml.mathdoc.fr/item/1103035962} }
Leaf, G. K. A spectral theory for a class of linear operators.. Pacific J. Math., Tome 13 (1963) no. 4, pp. 141-155. http://gdmltest.u-ga.fr/item/1103035962/