@article{JEMS_2010_12_1_a2,
     author = {Hitoshi Nakada},
     title = {On the {Lenstra} constant associated to the {Rosen} continued fractions},
     journal = {Journal of the European Mathematical Society},
     pages = {55--70},
     publisher = {mathdoc},
     volume = {12},
     number = {1},
     year = {2010},
     doi = {10.4171/jems/189},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/jems/189/}
}