@article{CRMATH_2019__357_8_655_0,
     author = {Rafiq, Ayesha and Mushtaq, Qaiser},
     title = {Coset diagrams of the modular group and continued fractions},
     journal = {Comptes Rendus. Math\'ematique},
     pages = {655--663},
     publisher = {Elsevier},
     volume = {357},
     number = {8},
     year = {2019},
     doi = {10.1016/j.crma.2019.07.002},
     language = {en},
     url = {http://www.numdam.org/articles/10.1016/j.crma.2019.07.002/}
}