@article{10_1017_S0017089517000167,
     author = {BERGER, ROLAND and LAMBRE, THIERRY and SOLOTAR, ANDREA},
     title = {KOSZUL {CALCULUS}},
     journal = {Glasgow mathematical journal},
     pages = {361--399},
     year = {2018},
     volume = {60},
     number = {2},
     doi = {10.1017/S0017089517000167},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0017089517000167/}
}