Authors: Kuich, W

Citation: W. Kuich, Pushdown tree automata, algebraic tree systems, and algebraic tree series, INF COMPUT, 165(1), 2001, pp. 69-99

Authors: Karner, G Kuich, W

Citation: G. Karner et W. Kuich, On certain closure operators defined by families of semiring morphisms, J ALGEBRA, 217(1), 1999, pp. 1-20