@article{05375033,
title = {Cohomology groups of a groupoid.},
journal = {Acta Universitatis Apulensis. Mathematics - Informatics},
volume = {11},
year = {2006},
pages = {109-114},
zbl = {1153.20313},
language = {en},
url = {http://dml.mathdoc.fr/item/05375033}
}
Wainberg, Dorin. Cohomology groups of a groupoid.. Acta Universitatis Apulensis. Mathematics - Informatics, Tome 11 (2006) pp. 109-114. http://gdmltest.u-ga.fr/item/05375033/