Formal languages and automata VII: Formal tree series (Part II)
... Theory. 1968. Vol. 2. P. 5781.
56. Wechler W. Universal Algebra for Computer Scientists // EATCS Monographs on Computer Science. Vol. 25. Springer, 1992.
Aleshnikov S., Boltnev Yu., Ésik Z., Ishanov S., Kuich W.
formal languages, automaton, tree automaton, semiring, formal tree series.
7-49
Formal languages and automata VII: Formal tree series (Part I)
... Systems Theory. 1968. Vol. 2. P. 5781.
54. Wechler W. Universal Algebra for Computer Scientists. EATCS Monographs on Computer Science, Vol. 25. Springer, 1992.
Aleshnikov S., Boltnev Yu., Ésik Z., Ishanov S., Kuich W.
formal languages, automaton, tree automaton, semiring, formal tree series.
5-32