@article{10_4153_S0008414X19000348,
     author = {S\'anchez, Javier},
     title = {Free {Group} {Algebras} in {Division} {Rings} with {Valuation} {II}},
     journal = {Canadian journal of mathematics},
     pages = {1463--1504},
     year = {2020},
     volume = {72},
     number = {6},
     doi = {10.4153/S0008414X19000348},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/S0008414X19000348/}
}