@book {Ohlert1886, title = {R{\"a}tsel und Gesellschaftsspiele der alten Griechen}, year = {1886}, publisher = {Mayer \& M{\"u}ller}, organization = {Mayer \& M{\"u}ller}, address = {Berlin}, url = {https://archive.org/details/bub_gb_6ceHyCWzSt4C}, author = {Ohlert, Konrad} }