@article{bwmeta1.element.bwnjournal-article-doi-10_4064-aa127-3-7, author = {Kurt Girstmair}, title = {The Galois relation x1 = x2 + x3 for finite simple groups}, journal = {Acta Arithmetica}, volume = {130}, year = {2007}, pages = {301-303}, zbl = {1117.12002}, language = {en}, url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-aa127-3-7} }
Kurt Girstmair. The Galois relation x₁ = x₂ + x₃ for finite simple groups. Acta Arithmetica, Tome 130 (2007) pp. 301-303. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-aa127-3-7/