@article{01024334,
title = {The reflectiveness of covering morphisms in algebra and geometry.},
journal = {Theory and Applications of Categories [electronic only]},
volume = {3},
year = {1997},
pages = {132-159},
zbl = {0866.18004},
language = {en},
url = {http://dml.mathdoc.fr/item/01024334}
}
Janelidze, G.; Kelly, G.M. The reflectiveness of covering morphisms in algebra and geometry.. Theory and Applications of Categories [electronic only], Tome 3 (1997) pp. 132-159. http://gdmltest.u-ga.fr/item/01024334/