@article{SF_1975__11_134131,
     author = {R.B. Hora and Naoki Kimura},
     title = {THE {DIRECT} {SUM} {OF} {SEMIGROUPS} {IS} {OF} {INNER} {TYPE}},
     journal = {Semigroup forum},
     pages = {95--101},
     publisher = {mathdoc},
     volume = {11},
     year = {1975},
     zbl = {0334.20034},
     url = {http://geodesic.mathdoc.fr/item/SF_1975__11_134131/}
}