@ARTICLE {2215,
author={J. Rasga and A. Sernadas and C. Sernadas and L. Viganò},
doi={},
journal={Journal of Logic and Computation},
title={Fibring labelled deduction systems},
year={2002},
month={June},
volume={12},
number={3},
pages={443-473},
ISSN={0955-792X}
}