@article{SF_1970__1_133784,
     author = {M. Friedberg and D.R. Brown},
     title = {A survey of compact divisible commutative semigroups.},
     journal = {Semigroup forum},
     pages = {143--161},
     publisher = {mathdoc},
     volume = {1},
     year = {1970},
     zbl = {0221.22003},
     url = {http://geodesic.mathdoc.fr/item/SF_1970__1_133784/}
}