@article{1102736585, author = {Jacob, Bill}, title = {Fans, real valuations, and hereditarily-Pythagorean fields.}, journal = {Pacific J. Math.}, volume = {97}, number = {2}, year = {1981}, pages = { 95-105}, language = {en}, url = {http://dml.mathdoc.fr/item/1102736585} }
Jacob, Bill. Fans, real valuations, and hereditarily-Pythagorean fields.. Pacific J. Math., Tome 97 (1981) no. 2, pp. 95-105. http://gdmltest.u-ga.fr/item/1102736585/