G. Karner

On limits in complete semirings

G. Karner, 1992 .

On Certain Closure Operators Defined by Families of Semiring Morphisms

Werner Kuich, Georg Karner, W. Kuich, 1999 .

A Characterization of Abstract Families of Algebraic Power Series

Werner Kuich, Georg Karner, W. Kuich, 1997, MFCS.