TY  - JOUR
AU  - Rotman, B.
TI  - A note on principal sequences
JO  - Glasgow mathematical journal
PY  - 1964
SP  - 133
EP  - 135
VL  - 6
IS  - 3
UR  - http://geodesic.mathdoc.fr/articles/10.1017/S2040618500034894/
DO  - 10.1017/S2040618500034894
ID  - 10_1017_S2040618500034894
ER  -