@article{10_4064_am_9_2_173_186,
     author = {J. Miku\'s and A. Rybarski},
     title = {Angen\"aherte {Schwingungsfrequenzformeln} f\"ur {Konservative} {Systeme} (3)},
     journal = {Applicationes Mathematicae},
     pages = {173--186},
     publisher = {mathdoc},
     volume = {9},
     number = {2},
     year = {1966},
     doi = {10.4064/am-9-2-173-186},
     zbl = {0156.31602},
     language = {de},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/am-9-2-173-186/}
}