@article{GDZPPN001250353, title = {Corollaries of the A-H-V formula.}, journal = {Semigroup forum}, volume = {7}, year = {1974}, pages = {310-317}, zbl = {0299.55021}, url = {http://dml.mathdoc.fr/item/GDZPPN001250353} }
Conner, P.E. Corollaries of the A-H-V formula.. Semigroup forum, Tome 7 (1974) pp. 310-317. http://gdmltest.u-ga.fr/item/GDZPPN001250353/