@article{RM_1972_27_4_a3,
     author = {S. M. Natanzon},
     title = {Invariant lines of {Fuchsian} groups},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {161--177},
     publisher = {mathdoc},
     volume = {27},
     number = {4},
     year = {1972},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_1972_27_4_a3/}
}