@article{GDZPPN001254731, title = {Division Semirings with 1 + 1 = 1 .}, journal = {Semigroup forum}, volume = {23}, year = {1981}, pages = {181-188}, zbl = {0467.16032}, url = {http://dml.mathdoc.fr/item/GDZPPN001254731} }
Hutchins, H.C. Division Semirings with 1 + 1 = 1 .. Semigroup forum, Tome 23 (1981) pp. 181-188. http://gdmltest.u-ga.fr/item/GDZPPN001254731/