@article{01433468,
title = {Strong morphisms of groupoids.},
journal = {Balkan Journal of Geometry and its Applications (BJGA)},
volume = {4},
year = {1999},
pages = {91-102},
zbl = {0971.20034},
language = {en},
url = {http://dml.mathdoc.fr/item/01433468}
}
Ivan, Gh. Strong morphisms of groupoids.. Balkan Journal of Geometry and its Applications (BJGA), Tome 4 (1999) pp. 91-102. http://gdmltest.u-ga.fr/item/01433468/