@article{MM2_1979__30_154683,
     author = {Guiseppe Valla},
     title = {On the {Symmetric} and {Rees} {Algebras} of an {Ideal.}},
     journal = {Manuscripta mathematica},
     pages = {239--256},
     publisher = {mathdoc},
     volume = {30},
     year = {1979},
     url = {http://geodesic.mathdoc.fr/item/MM2_1979__30_154683/}
}