@article{MAN_1923__89_159002,
     author = {G. Doetsch},
     title = {Die {Integrodifferentialgleichungen} vom {Faltungstypus}},
     journal = {Mathematische Annalen},
     pages = {192--207},
     publisher = {mathdoc},
     volume = {89},
     year = {1923},
     zbl = {49.0285.01},
     url = {http://geodesic.mathdoc.fr/item/MAN_1923__89_159002/}
}