@article{JIS_2011__14_6_a7,
     author = {Sondow, Jonathan and Nicholson, John W. and Noe, Tony D.},
     title = {Ramanujan primes: bounds, runs, twins, and gaps},
     journal = {Journal of integer sequences},
     publisher = {mathdoc},
     volume = {14},
     number = {6},
     year = {2011},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JIS_2011__14_6_a7/}
}