TY  - JOUR
AU  - VJ. Nummi
TI  - Operator-operand languages
JO  - Annales Fennici Mathematici
PY  - 1969
VL  - 421-450
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.5186/aasfm.1969.427/
DO  - 10.5186/aasfm.1969.427
LA  - en
ID  - AFM_1969_421-450_a23
ER  -