@ARTICLE {2546,
author={A. Sernadas and C. Sernadas and A. Zanardo},
doi={},
journal={Logic Journal of the IGPL},
title={Fibring modal first-order logics: Completeness preservation},
year={2002},
month={January},
volume={10},
number={4},
pages={413-451},
ISSN={1367-0751}
}