@article{avr07a,
author = "Arnon Avron, Jonathan Ben-Naim and Beata Konikowska",
title = "Cut-free Ordinary Sequent Calculi for Logics Having
         Generalized Finite-Valued Semantics",
journal = "Journal Logica Universalis",
volume = "1",
number = "1",
pages = "41--69",
year = ="2007"}