@article{DOCMA_2001__S7__a8,
     author = {Becher, Karim Johannes},
     title = {On the number of square classes of a field of finite level},
     journal = {Documenta mathematica},
     pages = {65--84},
     publisher = {mathdoc},
     volume = {Proc. Conf. Baton Rouge, March 26-30,2001},
     year = {2001},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DOCMA_2001__S7__a8/}
}