@article{TAC_2020_35_a4,
     author = {Karimah Sweet and Charles Ching-An Cheng},
     title = {Small categories of homological dimension one},
     journal = {Theory and applications of categories},
     pages = {137--154},
     publisher = {mathdoc},
     volume = {35},
     year = {2020},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/TAC_2020_35_a4/}
}