TY  - JOUR
AU  - Braune, Erhard
TI  - On the approximation of π by special algebraic numbers
JO  - Glasgow mathematical journal
PY  - 1980
SP  - 51
EP  - 56
VL  - 21
IS  - 1
UR  - http://geodesic.mathdoc.fr/articles/10.1017/S0017089500003979/
DO  - 10.1017/S0017089500003979
ID  - 10_1017_S0017089500003979
ER  -