@article{1102905517, author = {Wollenberg, Manfred}, title = {The invariance principle for wave operators.}, journal = {Pacific J. Math.}, volume = {61}, number = {2}, year = {1975}, pages = { 303-315}, language = {en}, url = {http://dml.mathdoc.fr/item/1102905517} }
Wollenberg, Manfred. The invariance principle for wave operators.. Pacific J. Math., Tome 61 (1975) no. 2, pp. 303-315. http://gdmltest.u-ga.fr/item/1102905517/