@article{SF_1992__45_3_135179,
     author = {G. Karner},
     title = {On limits in complete  semirings.},
     journal = {Semigroup forum},
     pages = {148--165},
     year = {1992},
     volume = {45},
     number = {3},
     zbl = {0780.16037},
     url = {http://geodesic.mathdoc.fr/item/SF_1992__45_3_135179/}
}