@article{10_4153_CJM_1974_090_9,
     author = {Losey, Gerald},
     title = {N-Series and {Filtrations} of the {Augmentation} {Ideal}},
     journal = {Canadian journal of mathematics},
     pages = {962--977},
     year = {1974},
     volume = {26},
     number = {4},
     doi = {10.4153/CJM-1974-090-9},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1974-090-9/}
}