@article{1093887827,
author = {Orenduff, J. M.},
title = {Are modal contexts referentially opaque?},
journal = {Notre Dame J. Formal Logic},
volume = {18},
number = {1},
year = {1977},
pages = { 128-132},
language = {en},
url = {http://dml.mathdoc.fr/item/1093887827}
}
Orenduff, J. M. Are modal contexts referentially opaque?. Notre Dame J. Formal Logic, Tome 18 (1977) no. 1, pp. 128-132. http://gdmltest.u-ga.fr/item/1093887827/