@article{GDZPPN002348780,
title = {On the Relation PQ -QP = -iI.},
journal = {Mathematica Scandinavica},
volume = {20},
year = {1967},
pages = {79-88},
zbl = {0149.10101},
url = {http://dml.mathdoc.fr/item/GDZPPN002348780}
}
Fuglede, B. On the Relation PQ -QP = -iI.. Mathematica Scandinavica, Tome 20 (1967) pp. 79-88. http://gdmltest.u-ga.fr/item/GDZPPN002348780/