@article{SF_1992__45_3_135176,
     author = {K.P.S. Bhaskara  Rao and R.M. Shortt},
     title = {Extensions of semigroup valued, finitely additive measures.},
     journal = {Semigroup forum},
     pages = {120--128},
     publisher = {mathdoc},
     volume = {45},
     number = {3},
     year = {1992},
     zbl = {0760.28006},
     url = {http://geodesic.mathdoc.fr/item/SF_1992__45_3_135176/}
}