TY  - JOUR
AU  - D.W. Hardy
AU  - G. Markowsky
AU  - R.L. Brandon
TI  - The Schützenberger group of an H-class in the semigroup of binary relations.
JO  - Semigroup forum
PY  - 1972
SP  - 45
EP  - 53
VL  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SF_1972__5_133922/
ID  - SF_1972__5_133922
ER  -