@article{02168619, title = {Powers of a product of commutators as products of squares.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {2004}, year = {2004}, pages = {373-375}, doi = {10.1155/S0161171204304047}, zbl = {1070.20038}, language = {en}, url = {http://dml.mathdoc.fr/item/02168619} }
Abdollahi, Alireza. Powers of a product of commutators as products of squares.. International Journal of Mathematics and Mathematical Sciences, Tome 2004 (2004) pp. 373-375. doi : 10.1155/S0161171204304047. http://gdmltest.u-ga.fr/item/02168619/