@article{10_4064_fm199_2_1,
     author = {Evelyn L. Hart},
     title = {Reidemeister conjugacy for finitely generated free
 fundamental groups},
     journal = {Fundamenta Mathematicae},
     pages = {93--118},
     publisher = {mathdoc},
     volume = {199},
     number = {2},
     year = {2008},
     doi = {10.4064/fm199-2-1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm199-2-1/}
}