@article{MZ_1929__30_168139,
     author = {L. Tschakaloff},
     title = {Beitrag zum {Problem} der quadrierbaren {Kreisbogenzweiecke}},
     journal = {Mathematische Zeitschrift},
     pages = {552--559},
     publisher = {mathdoc},
     volume = {30},
     year = {1929},
     zbl = {56.0114.03},
     url = {http://geodesic.mathdoc.fr/item/MZ_1929__30_168139/}
}