@article{GDZPPN001176358,
title = {A Finite Element Lumped Mass Scheme for Solving Eigenvalue Problems of Circular Arches.},
journal = {Numerische Mathematik},
volume = {35},
year = {1980},
pages = {267-290},
zbl = {0438.73065},
url = {http://dml.mathdoc.fr/item/GDZPPN001176358}
}
Ishihara, K. A Finite Element Lumped Mass Scheme for Solving Eigenvalue Problems of Circular Arches.. Numerische Mathematik, Tome 35 (1980) pp. 267-290. http://gdmltest.u-ga.fr/item/GDZPPN001176358/