TY  - JOUR
AU  - Stanisław Lewanowicz
TI  - Minimal projective operators
JO  - Mathematica Applicanda
PY  - 1979
SP  -  25
EP  - 46
VL  - 7
IS  - 15
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.14708/ma.v7i15.1477/
DO  - 10.14708/ma.v7i15.1477
LA  - pl
ID  - 10_14708_ma_v7i15_1477
ER  -