@article{ASNSP_1996_4_23_2_383_0,
     author = {Ashbaugh, Mark S. and Laugesen, Richard S.},
     title = {Fundamental tones and buckling loads of clamped plates},
     journal = {Annali della Scuola Normale Superiore di Pisa - Classe di Scienze},
     pages = {383--402},
     publisher = {Scuola normale superiore},
     volume = {Ser. 4, 23},
     number = {2},
     year = {1996},
     mrnumber = {1433428},
     zbl = {0891.73028},
     language = {en},
     url = {http://www.numdam.org/item/ASNSP_1996_4_23_2_383_0/}
}