@article{DMPS_2014_34_1-2_a1,
     author = {Ardakani, Mostafa and Wulff, Shaun},
     title = {An extended problem to {Bertrand's} paradox},
     journal = {Discussiones Mathematicae. Probability and Statistics},
     pages = {23--34},
     publisher = {mathdoc},
     volume = {34},
     number = {1-2},
     year = {2014},
     zbl = {1326.60009},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DMPS_2014_34_1-2_a1/}
}