@article{GDZPPN001247867, title = {Locally compact subgroups of the spectrum of the measure algebra.}, journal = {Semigroup forum}, volume = {2}, year = {1971}, pages = {95-107}, zbl = {0227.43004}, url = {http://dml.mathdoc.fr/item/GDZPPN001247867} }
Dunkl, C.F.; Ramirez, D.E. Locally compact subgroups of the spectrum of the measure algebra.. Semigroup forum, Tome 2 (1971) pp. 95-107. http://gdmltest.u-ga.fr/item/GDZPPN001247867/