@article{10_4153_CJM_1999_015_0,
     author = {Enochs, Edgar E. and Herzog, Ivo},
     title = {A {Homotopy} of {Quiver} {Morphisms} with {Applications} to {Representations}},
     journal = {Canadian journal of mathematics},
     pages = {294--308},
     year = {1999},
     volume = {51},
     number = {2},
     doi = {10.4153/CJM-1999-015-0},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1999-015-0/}
}