@article{CM_1939__6__221_0,
     author = {Freudenthal, Hans},
     title = {\"Uber ein {Beugungsproblem} aus der elektromagnetischen {Lichttheorie}},
     journal = {Compositio Mathematica},
     pages = {221--227},
     publisher = {Johnson Reprint Corporation},
     volume = {6},
     year = {1939},
     zbl = {0020.27104},
     language = {de},
     url = {http://www.numdam.org/item/CM_1939__6__221_0/}
}