@article{MZ_1939__45_168871,
     author = {R., Sprague},
     title = {Beispiel einer {Zerlegung} des {Quadrats} in lauter verschiedene {Quadrate}},
     journal = {Mathematische Zeitschrift},
     pages = {607--608},
     year = {1939},
     volume = {45},
     zbl = {65.0656.03},
     url = {http://geodesic.mathdoc.fr/item/MZ_1939__45_168871/}
}