TY  - JOUR
AU  - H. Dishkant
TI  - Weak decidability of some modal extention of trigonometry
JO  - Fundamenta Mathematicae
PY  - 1973
SP  - 255
EP  - 260
VL  - 81
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/fm-81-3-255-260/
DO  - 10.4064/fm-81-3-255-260
LA  - en
ID  - 10_4064_fm_81_3_255_260
ER  -