@article{JRAM_1927__156_149596,
     author = {Walther J\"anichen},
     title = {\"Uber die {N\"aherungsnenner} {Stieltjesscher} {Kettenbr\"uche.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {55--68},
     publisher = {mathdoc},
     volume = {156},
     year = {1927},
     zbl = {52.0468.02},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1927__156_149596/}
}