TY  - JOUR
AU  - Hell, Pavol
AU  - Nešetřil, Jaroslav
TI  - Groups and Monoids of Regular Graphs (And of Graphs with Bounded Degrees)
JO  - Canadian journal of mathematics
PY  - 1973
SP  - 239
EP  - 251
VL  - 25
IS  - 2
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CJM-1973-024-8/
DO  - 10.4153/CJM-1973-024-8
ID  - 10_4153_CJM_1973_024_8
ER  -