@article{RSMUP_1985__73__49_0,
author = {Hausen, Jutta and Johnson, Johnny A.},
title = {On the existence of projective and quasi-projective covers},
journal = {Rendiconti del Seminario Matematico della Universit\`a di Padova},
volume = {74},
year = {1985},
pages = {49-54},
mrnumber = {799896},
zbl = {0571.16015},
language = {en},
url = {http://dml.mathdoc.fr/item/RSMUP_1985__73__49_0}
}
Hausen, Jutta; Johnson, Johnny A. On the existence of projective and quasi-projective covers. Rendiconti del Seminario Matematico della Università di Padova, Tome 74 (1985) pp. 49-54. http://gdmltest.u-ga.fr/item/RSMUP_1985__73__49_0/
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