@article{10_4153_CJM_1997_028_8,
     author = {Rosset, Shmuel and Wasserman, Alon},
     title = {The {Schreier} {Technique} for {Subalgebras} of a {Free} {Lie} {Algebra}},
     journal = {Canadian journal of mathematics},
     pages = {600--616},
     year = {1997},
     volume = {49},
     number = {3},
     doi = {10.4153/CJM-1997-028-8},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1997-028-8/}
}