@article{03908634, title = {On automorphism group of free quadratic extensions over a ring.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {7}, year = {1984}, pages = {103-108}, doi = {10.1155/S0161171284000107}, zbl = {0569.16030}, language = {en}, url = {http://dml.mathdoc.fr/item/03908634} }
Szeto, George. On automorphism group of free quadratic extensions over a ring.. International Journal of Mathematics and Mathematical Sciences, Tome 7 (1984) pp. 103-108. doi : 10.1155/S0161171284000107. http://gdmltest.u-ga.fr/item/03908634/