@article{10_4153_CJM_1989_006_1,
     author = {Lustig, Martin and Moriah, Yoav and Rosenberger, Gerhard},
     title = {Automorphisms of {Fuchsian} {Groups} and their {Lifts} to {Free} {Groups}},
     journal = {Canadian journal of mathematics},
     pages = {123--131},
     year = {1989},
     volume = {41},
     number = {1},
     doi = {10.4153/CJM-1989-006-1},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1989-006-1/}
}