@article{MM2_1980__33_154737,
     author = {Jean Marot},
     title = {About {Nagata} {Rings.}},
     journal = {Manuscripta mathematica},
     pages = {27--36},
     publisher = {mathdoc},
     volume = {33},
     year = {1980},
     zbl = {0534.13003},
     url = {http://geodesic.mathdoc.fr/item/MM2_1980__33_154737/}
}