@article{10_4153_CJM_2012_046_1,
     author = {Abdesselam, Abdelmalek and Chipalkatti, Jaydeep},
     title = {On {Hilbert} {Covariants}},
     journal = {Canadian journal of mathematics},
     pages = {3--30},
     year = {2014},
     volume = {66},
     number = {1},
     doi = {10.4153/CJM-2012-046-1},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-2012-046-1/}
}