@article{CTGDC_1992__33_3_223_0,
     author = {Diers, Yves},
     title = {The {Zariski} category of graded commutative rings},
     journal = {Cahiers de Topologie et G\'eom\'etrie Diff\'erentielle Cat\'egoriques},
     pages = {223--224},
     publisher = {Dunod \'editeur, publi\'e avec le concours du CNRS},
     volume = {33},
     number = {3},
     year = {1992},
     mrnumber = {1186946},
     zbl = {0777.18003},
     language = {en},
     url = {http://www.numdam.org/item/CTGDC_1992__33_3_223_0/}
}