@article{articlef14fa32d,
title   = {Hermitian lumped mass matrix formulation for flexural wave propagation},
author = {Laier, José Elias},
year = {1998},
doi = {10.1002/(sici)1099-0887(199801)14:1%3C43::aid-cnm132%3E3.0.co;2-a},
journal   = {Communications in Numerical Methods in Engineering}
}