TY  - JOUR
AU  - Wallach, Nolan R.
TI  - On Maximal Subsystems of Root Systems
JO  - Canadian journal of mathematics
PY  - 1968
SP  - 555
EP  - 574
VL  - 20
IS  - 1
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CJM-1968-056-4/
DO  - 10.4153/CJM-1968-056-4
ID  - 10_4153_CJM_1968_056_4
ER  -