@article{JIS_2002__5_2_a5,
     author = {Dubner, Harvey},
     title = {Carmichael numbers of the form $(6m+1)(12m+1)(18m+1)$},
     journal = {Journal of integer sequences},
     publisher = {mathdoc},
     volume = {5},
     number = {2},
     year = {2002},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JIS_2002__5_2_a5/}
}