@article{01814802, title = {Powers of commutators as products of squares.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {30}, year = {2002}, pages = {635-637}, doi = {10.1155/S0161171202013078}, zbl = {1013.20028}, language = {en}, url = {http://dml.mathdoc.fr/item/01814802} }
Akhavan-Malayeri, M. Powers of commutators as products of squares.. International Journal of Mathematics and Mathematical Sciences, Tome 30 (2002) pp. 635-637. doi : 10.1155/S0161171202013078. http://gdmltest.u-ga.fr/item/01814802/