@article{AMLG_1972__15_137867,
     author = {J.L. Bell},
     title = {On the relationship between weak compactness in {L...} and restricted second-order languages.},
     journal = {Archiv f\"ur mathematische Logik und Grundlagenforschung},
     pages = {74--78},
     publisher = {mathdoc},
     volume = {15},
     year = {1972},
     zbl = {0253.02009},
     url = {http://geodesic.mathdoc.fr/item/AMLG_1972__15_137867/}
}