TY  - JOUR
AU  - Nobusawa, Nobuo
TI  - On Rationality of Algebraic Function Fields
JO  - Canadian mathematical bulletin
PY  - 1969
SP  - 339
EP  - 341
VL  - 12
IS  - 3
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CMB-1969-044-0/
DO  - 10.4153/CMB-1969-044-0
ID  - 10_4153_CMB_1969_044_0
ER  -