@article{PPN517628244+dmdlog17,
     title = {Kapitel L. Deutsche Rechenlehrer. Johann von Gemunden, Georg von Peurbach.},
     booktitle = {Von 1200 - 1668 Bd. 2},
     series = {GDML\_Books},
     year = {1892},
     pages = {157},
     url = {http://dml.mathdoc.fr/item/PPN517628244+dmdlog17}
}