@article{BUMI_1998_8_1B_3_a2,
     author = {Robbiano, Lorenzo and Valla, Giuseppe},
     title = {Hilbert-Poincar\'e series of bigraded algebras},
     journal = {Bollettino della Unione matematica italiana},
     pages = {521--540},
     publisher = {mathdoc},
     volume = {Ser. 8, 1B},
     number = {3},
     year = {1998},
     zbl = {0915.13010},
     mrnumber = {1251956},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/BUMI_1998_8_1B_3_a2/}
}