@article{GDZPPN002079380, title = {QR in two dimensions.}, journal = {Elemente der Mathematik}, volume = {31}, year = {1976}, pages = {109-114}, zbl = {0361.65028}, url = {http://dml.mathdoc.fr/item/GDZPPN002079380} }
Kreyszig, Erwin. QR in two dimensions.. Elemente der Mathematik, Tome 31 (1976) pp. 109-114. http://gdmltest.u-ga.fr/item/GDZPPN002079380/