@article{AMLG_1983__23_138011,
     author = {M.W. Bunder},
     title = {Set theory in predicate calculus with equality},
     journal = {Archiv f\"ur mathematische Logik und Grundlagenforschung},
     pages = {109--114},
     publisher = {mathdoc},
     volume = {23},
     year = {1983},
     url = {http://geodesic.mathdoc.fr/item/AMLG_1983__23_138011/}
}