@article{CM_1996__103_1_7_0,
     author = {Johnson, Mark and Ulrich, Bernd},
     title = {Artin-Nagata properties and {Cohen-Macaulay} associated graded rings},
     journal = {Compositio Mathematica},
     pages = {7--29},
     publisher = {Kluwer Academic Publishers},
     volume = {103},
     number = {1},
     year = {1996},
     mrnumber = {1404996},
     zbl = {0866.13001},
     language = {en},
     url = {http://www.numdam.org/item/CM_1996__103_1_7_0/}
}