@article{10_4153_CJM_1974_050_3,
     author = {Burroughs, John},
     title = {Operations in {Grothendieck} {Rings} and the {Symmetric} {Group}},
     journal = {Canadian journal of mathematics},
     pages = {543--550},
     year = {1974},
     volume = {26},
     number = {3},
     doi = {10.4153/CJM-1974-050-3},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1974-050-3/}
}