@article{10_4153_CJM_1979_110_2,
     author = {Brunner, A. M. and Burns, R. G.},
     title = {Groups in which every {Finitely} {Generated} {Subgroup} is almost a {Free} {Factor}},
     journal = {Canadian journal of mathematics},
     pages = {1329--1338},
     year = {1979},
     volume = {31},
     number = {6},
     doi = {10.4153/CJM-1979-110-2},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1979-110-2/}
}