@article{MZ_1922__12_167682,
     author = {E. Hecke},
     title = {\"Uber die {Integralgleichung} der kinetischen {Gastheorie}},
     journal = {Mathematische Zeitschrift},
     pages = {274--286},
     publisher = {mathdoc},
     volume = {12},
     year = {1922},
     zbl = {48.1249.02},
     url = {http://geodesic.mathdoc.fr/item/MZ_1922__12_167682/}
}