formerly:
Journal of Information Processing and Cybernetics /
Elektronische Informationsverarbeitung und Kybernetik
@article{jalc080204,
author = {Zolt{\'a}n {\'E}sik and Werner Kuich},
title = {Formal Tree Series},
journal = jalc,
year = 2003,
volume = 8,
number = 2,
pages = {219--285}
}