@article{GDZPPN002044269,
title = {A calculus for finitely satisfiable formulas with identity.},
journal = {Archiv f\"ur mathematische Logik und Grundlagenforschung},
volume = {15},
year = {1972},
pages = {158-163},
zbl = {0262.02013},
url = {http://dml.mathdoc.fr/item/GDZPPN002044269}
}
Bullock, Arthur M.; Schneider, Hubert H. A calculus for finitely satisfiable formulas with identity.. Archiv für mathematische Logik und Grundlagenforschung, Tome 15 (1972) pp. 158-163. http://gdmltest.u-ga.fr/item/GDZPPN002044269/