@article{MM2_1987__59_155263,
     author = {Antonio G. Rodicio},
     title = {Some characterizaions of smooth, regular, and complete intersection algebras.},
     journal = {Manuscripta mathematica},
     pages = {491--498},
     publisher = {mathdoc},
     volume = {59},
     year = {1987},
     zbl = {0643.13003},
     url = {http://geodesic.mathdoc.fr/item/MM2_1987__59_155263/}
}