@article{JIS_2015__18_2_a1,
     author = {Metzger,  Jerry and Richards,  Thomas},
     title = {A prisoner problem variation},
     journal = {Journal of integer sequences},
     year = {2015},
     volume = {18},
     number = {2},
     zbl = {1378.60074},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JIS_2015__18_2_a1/}
}