@article{JRAM_1900__122_149110,
     author = {Paul Schafheitlin},
     title = {Die {Nullstellen} der {Besselschen} {Functionen.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {299--321},
     publisher = {mathdoc},
     volume = {122},
     year = {1900},
     zbl = {31.0459.02},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1900__122_149110/}
}