@article{JIS_2017__20_6_a1,
     author = {Bayless, Jonathan and Kinlaw, Paul},
     title = {Explicit bounds for the sum of reciprocals of pseudoprimes and {Carmichael} numbers},
     journal = {Journal of integer sequences},
     publisher = {mathdoc},
     volume = {20},
     number = {6},
     year = {2017},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JIS_2017__20_6_a1/}
}