@article{GDZPPN002403315, title = {Homology of Categories and Exactness of Direct Limits.}, journal = {Mathematische Zeitschrift}, volume = {105}, year = {1968}, pages = {87-115}, zbl = {0176.28902}, url = {http://dml.mathdoc.fr/item/GDZPPN002403315} }
Oberst, Ulrich. Homology of Categories and Exactness of Direct Limits.. Mathematische Zeitschrift, Tome 105 (1968) pp. 87-115. http://gdmltest.u-ga.fr/item/GDZPPN002403315/