TY  - JOUR
AU  - Kim, Jin Bai
TI  - Mutants in the symmetric semigroups
JO  - Czechoslovak Mathematical Journal
PY  - 1971
SP  - 355
EP  - 363
VL  - 21
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1971.101032/
DO  - 10.21136/CMJ.1971.101032
LA  - en
ID  - 10_21136_CMJ_1971_101032
ER  -