TY  - JOUR
AU  - Leep, David B.
TI  - Levels of division algebras
JO  - Glasgow mathematical journal
PY  - 1990
SP  - 365
EP  - 370
VL  - 32
IS  - 3
UR  - http://geodesic.mathdoc.fr/articles/10.1017/S0017089500009447/
DO  - 10.1017/S0017089500009447
ID  - 10_1017_S0017089500009447
ER  -