@article{SF_1972__5_133951,
     author = {M. Fisher},
     title = {The embeddability of an invertible measure.},
     journal = {Semigroup forum},
     pages = {340--353},
     publisher = {mathdoc},
     volume = {5},
     year = {1972},
     zbl = {0259.47037},
     url = {http://geodesic.mathdoc.fr/item/SF_1972__5_133951/}
}