@article{NUMA_1976__27_132468,
     author = {R. Haverkamp},
     title = {Sturm-Liouville-Probl\`eme mit schwach singul\"aren {Koeffizientenfunktionen.} {Teil} {I.} {Eigenwertproblem.}},
     journal = {Numerische Mathematik},
     pages = {471--484},
     publisher = {mathdoc},
     volume = {27},
     year = {1976},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1976__27_132468/}
}