@article{10_4064_ap_23_2_117_124,
     author = {Wolfgang Walter},
     title = {\"Uber die {Eindeutigkeitsbedingung} von {Krasnoselskii-Kreǐn} bei hyperbolischen {Differentialgleichungen}},
     journal = {Annales Polonici Mathematici},
     pages = {117--124},
     publisher = {mathdoc},
     volume = {23},
     number = {2},
     year = {1970},
     doi = {10.4064/ap-23-2-117-124},
     language = {de},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-23-2-117-124/}
}