@article{01560717,
title = {On sifted colimits and generalized varieties.},
journal = {Theory and Applications of Categories [electronic only]},
volume = {8},
year = {2001},
pages = {33-53},
zbl = {0971.18004},
language = {en},
url = {http://dml.mathdoc.fr/item/01560717}
}
Adámek, Jiří; Rosický, Jiří. On sifted colimits and generalized varieties.. Theory and Applications of Categories [electronic only], Tome 8 (2001) pp. 33-53. http://gdmltest.u-ga.fr/item/01560717/