@article{ARM_2003_39_3_a1,
     author = {Gregu\v{s}, Michal and Gregu\v{s}, Michal, Jr.},
     title = {On certain singular third order eigenvalue problem},
     journal = {Archivum mathematicum},
     pages = {173--177},
     year = {2003},
     volume = {39},
     number = {3},
     mrnumber = {2010717},
     zbl = {1116.34306},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ARM_2003_39_3_a1/}
}