The following is a list of texts, which I am looking for. If you have a copy. I would be grateful, if you could send me one.

• Adamek, Trnkova, Automata and Algebras in Categories, Math. and its Appl., Kluwer, 1989
• Diers, Categories multialgebraiques, Arch. Math. (Basel) (1980) 193-209