@article{ChenFoxLyndon:AM:1958,
    title = {{Free Differential Calculus, IV. The Quotient Groups of the Lower Central Series}},
    volume = {68},
    issn = {0003-486X},
    url = {http://dx.doi.org/10.2307/1970044},
    doi = {10.2307/1970044},
    number = {1},
    journal = {The Annals of Mathematics},
    publisher = {JSTOR},
    author = {Chen, Kuo-Tsai and Fox, Ralph H. and Lyndon, Roger C.},
    year = {1958},
    month = {jul},
    pages = {81},
    date-added = {2024-12-16 15:26:46 +0100}
}

@article{ChenFoxLyndon:AM:1958, title = {{Free Differential Calculus, IV. The Quotient Groups of the Lower Central Series}}, volume = {68}, issn = {0003-486X}, url = {http://dx.doi.org/10.2307/1970044}, doi = {10.2307/1970044}, number = {1}, journal = {The Annals of Mathematics}, publisher = {JSTOR}, author = {Chen, Kuo-Tsai and Fox, Ralph H. and Lyndon, Roger C.}, year = {1958}, month = {jul}, pages = {81}, date-added = {2024-12-16 15:26:46 +0100} }