@article{GDZPPN002045222,
title = {The theorems of Beth and Craig in abstract model theory. II. Compact logics.},
journal = {Archiv f\"ur mathematische Logik und Grundlagenforschung},
volume = {21},
year = {1981},
pages = {13-36},
zbl = {0472.03028},
url = {http://dml.mathdoc.fr/item/GDZPPN002045222}
}
Shelah, S.; Makowsky, J.A. The theorems of Beth and Craig in abstract model theory. II. Compact logics.. Archiv für mathematische Logik und Grundlagenforschung, Tome 21 (1981) pp. 13-36. http://gdmltest.u-ga.fr/item/GDZPPN002045222/