@article{PIM2_1981__30(44)_257608,
     author = {Joo, I. and Stacho, L.L.},
     title = {An upper estimation for the eigenfrequencies of vibrating {Liapunoff} bodies (first boundary value problem).},
     journal = {Publications de l 'Institut Math\'ematique. Nouvelle S\'erie},
     pages = {59},
     publisher = {mathdoc},
     volume = {30(44)},
     year = {1981},
     zbl = {0506.34026},
     language = {en},
     url = {https://geodesic-test.mathdoc.fr/item/PIM2_1981__30(44)_257608/}
}