@article{1102735080, author = {Phillips, W. J.}, title = {On the relation $PQ-QP=-iI$.}, journal = {Pacific J. Math.}, volume = {97}, number = {2}, year = {1981}, pages = { 435-441}, language = {en}, url = {http://dml.mathdoc.fr/item/1102735080} }
Phillips, W. J. On the relation $PQ-QP=-iI$.. Pacific J. Math., Tome 97 (1981) no. 2, pp. 435-441. http://gdmltest.u-ga.fr/item/1102735080/