@article{JRAM_1967__228_150813,
     author = {Rolf Walter},
     title = {\"Uber zweidimensionale parabolische {Fl\"achen} im vierdimensional affinen {Raum.} {II.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {71--92},
     publisher = {mathdoc},
     volume = {228},
     year = {1967},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1967__228_150813/}
}