@article{SF_1982__24_134549,
     author = {J. Welnert},
     title = {Seminearrings, seminearfields and their semigroup-theoretical background.},
     journal = {Semigroup forum},
     pages = {231--254},
     year = {1982},
     volume = {24},
     zbl = {0484.16024},
     url = {http://geodesic.mathdoc.fr/item/SF_1982__24_134549/}
}