Cristina Bertone Quasi-stable ideals and Borel-fixed ideals with a given Hilbert polynomial. 507-525 2015 26 Appl. Algebra Eng. Commun. Comput. 6 https://doi.org/10.1007/s00200-015-0263-6 db/journals/aaecc/aaecc26.html#Bertone15