@article{MM2_1975__17_154359,
     author = {Manfred Kracht and Erwin Kreyszig},
     title = {Zur {Konstruktion} gewisser {Integraloperatoren} f\"ur partielle {Differentialgleichungen} {Teil} {I.}},
     journal = {Manuscripta mathematica},
     pages = {79--104},
     publisher = {mathdoc},
     volume = {17},
     year = {1975},
     zbl = {0321.35009},
     url = {http://geodesic.mathdoc.fr/item/MM2_1975__17_154359/}
}