@article{GDZPPN002234904,
title = {Relative coherence and preenvelopes.},
journal = {Manuscripta mathematica},
volume = {79},
year = {1993},
pages = {243-262},
zbl = {0802.16023},
url = {http://dml.mathdoc.fr/item/GDZPPN002234904}
}
Ding, Nanqing; Chen, Jianlong. Relative coherence and preenvelopes.. Manuscripta mathematica, Tome 79 (1993) pp. 243-262. http://gdmltest.u-ga.fr/item/GDZPPN002234904/