Masami Ito, Carlos MartÃn-Vide, Gheorghe Paun. A Characterization of Parikh Sets of ET0L Languages in Terms of P Systems. In Masami Ito, Gheorghe Paun, Sheng Yu, editors, Words, Semigroups, and Transductions - Festschrift in Honor of Gabriel Thierrin. pages 239-253, World Scientific, 2001.
Abstract is missing.