@article{GDZPPN00205907X,
title = {Operational Calculus for Two Commuting Closed Operators.},
journal = {Commentarii mathematici Helvetici},
volume = {43},
year = {1968},
pages = {87-97},
zbl = {0155.46103},
url = {http://dml.mathdoc.fr/item/GDZPPN00205907X}
}
Marti, J.T. Operational Calculus for Two Commuting Closed Operators.. Commentarii mathematici Helvetici, Tome 43 (1968) pp. 87-97. http://gdmltest.u-ga.fr/item/GDZPPN00205907X/