Tignol, J.-P., Denert, M., and Van Geel, Jan. "The level of cyclic division algebras.." Mathematische Zeitschrift 205.4 (1990): 603-616. <http://eudml.org/doc/174198>.
@article{Tignol1990, author = {Tignol, J.-P., Denert, M., Van Geel, Jan}, journal = {Mathematische Zeitschrift}, keywords = {invariants of cyclic field extensions; cyclic division algebras; sums of squares; level; sublevel; product-level}, number = {4}, pages = {603-616}, title = {The level of cyclic division algebras.}, url = {http://eudml.org/doc/174198}, volume = {205}, year = {1990}, }
TY - JOUR AU - Tignol, J.-P. AU - Denert, M. AU - Van Geel, Jan TI - The level of cyclic division algebras. JO - Mathematische Zeitschrift PY - 1990 VL - 205 IS - 4 SP - 603 EP - 616 KW - invariants of cyclic field extensions; cyclic division algebras; sums of squares; level; sublevel; product-level UR - http://eudml.org/doc/174198 ER -