@article{10_4153_CMB_1986_033_x,
     author = {Burns, R. G. and Imrich, Wilfried and Servatius, Brigitte},
     title = {Remarks on the {Intersection} of {Finitely} {Generated} {Subgroups} of a {Free} {Group}},
     journal = {Canadian mathematical bulletin},
     pages = {204--207},
     year = {1986},
     volume = {29},
     number = {2},
     doi = {10.4153/CMB-1986-033-x},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1986-033-x/}
}