@article{10_4153_CJM_1976_128_9,
     author = {Brown, William C.},
     title = {Blow {Up} {Sequences} and the {Module} of nth {Order} {Differentials}},
     journal = {Canadian journal of mathematics},
     pages = {1289--1301},
     year = {1976},
     volume = {28},
     number = {6},
     doi = {10.4153/CJM-1976-128-9},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1976-128-9/}
}