References
R. Burns, On the intersection of finitely generated subgroups of a free group. Math. Z.119, 121–130 (1971).
W.Dicks, private communication.
M.Hall, Jr., The Theory of Groups. Chelsea 1976.
A. G. Howson, On the intersection of finitely generated free groups. J. London Math. Soc.29, 428–434 (1954).
W. Imrich, Subgroup theorems and graphs. In: Combinatorial Mathematics V, LNM622, 1–27, Berlin-Heidelberg-New York 1977.
H. Neumann, On the intersection of finitely generated free groups. Publ. Math. Debrecen4, 186–189 (1955–56). Addendum, ibid.5, 128 (1957–58).
W. D.Neumann, On intersections of finitely generated subgroups of free groups. In: Proceedings of the Third International Group Theory Conference, L. G.Kovács, ed., LNM1456, 161–170, Berlin-Heidelberg-New York 1990.
P. Nicholas, Intersections of finitely generated free groups. Bull. Austral. Math. Soc.34, 339–348 (1985).
J. R. Stallings, Topology of finite graphs. Invent. Math.71, 551–565, (1983).
G. Tardos, On the intersection of subgroups of a free group. Invent. Math.108, 29–36 (1992).
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Imrich, W., Müller, T. On Howson's Theorem. Arch. Math 62, 193–198 (1994). https://doi.org/10.1007/BF01261357
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DOI: https://doi.org/10.1007/BF01261357