@article{GDZPPN002045559,
title = {A note on a proof of Sherpherdson.},
journal = {Archiv f\"ur mathematische Logik und Grundlagenforschung},
volume = {23},
year = {1983},
pages = {55-60},
zbl = {0544.03030},
url = {http://dml.mathdoc.fr/item/GDZPPN002045559}
}
Flannagan, T.B. A note on a proof of Sherpherdson.. Archiv für mathematische Logik und Grundlagenforschung, Tome 23 (1983) pp. 55-60. http://gdmltest.u-ga.fr/item/GDZPPN002045559/