@article{10_21136_CMJ_1968_100816,
     author = {Triebel, Hans},
     title = {Eigenwertverteilungen und {Greensche} {Funktionen} entarteter elliptischer {Differentialoperatoren}},
     journal = {Czechoslovak Mathematical Journal},
     pages = {117--136},
     year = {1968},
     volume = {18},
     number = {1},
     doi = {10.21136/CMJ.1968.100816},
     mrnumber = {0225028},
     zbl = {0169.47301},
     language = {de},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1968.100816/}
}