%0 Journal Article %A HEIL, SIMON %T JSJ DECOMPOSITIONS OF DOUBLES OF FREE GROUPS %J Glasgow mathematical journal %D 2020 %P 367-382 %V 62 %N 2 %U http://geodesic.mathdoc.fr/articles/10.1017/S0017089519000168/ %R 10.1017/S0017089519000168 %F 10_1017_S0017089519000168