@article{1093887931,
author = {Campbell, Paul J.},
title = {An answer to Armstrong's question about incompleteness in Copi: ``A question about incompleteness''.},
journal = {Notre Dame J. Formal Logic},
volume = {18},
number = {1},
year = {1977},
pages = { 262-264},
language = {en},
url = {http://dml.mathdoc.fr/item/1093887931}
}
Campbell, Paul J. An answer to Armstrong's question about incompleteness in Copi: ``A question about incompleteness''.. Notre Dame J. Formal Logic, Tome 18 (1977) no. 1, pp. 262-264. http://gdmltest.u-ga.fr/item/1093887931/