@article{RM_1993_48_3_a11,
     author = {Yu. Yu. Finkel'shtein},
     title = {Klein polygons and reduced regular continued fractions},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {198--200},
     publisher = {mathdoc},
     volume = {48},
     number = {3},
     year = {1993},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_1993_48_3_a11/}
}