@article{10_2307_121087,
     author = {Luchezar L. Avramov},
     title = {Locally complete intersection homomorphisms and a conjecture of {Quillen} on the vanishing of cotangent homology},
     journal = {Annals of mathematics},
     year = {1999},
     volume = {150},
     number = {2},
     doi = {10.2307/121087},
     zbl = {0968.13007},
     url = {http://geodesic.mathdoc.fr/articles/10.2307/121087/}
}