@article{Mascotto-Perugia-Pichler:2019B,
author = {Mascotto, L. and Perugia, I. and Pichler, A.},
title = {A nonconforming {T}refftz virtual element method for the {H}elmholtz problem: numerical aspects},
journal={Comput. Methods Appl. Mech. Engrg.},
year={2019},
volume={347},
pages={445--476},
publisher={Elsevier},
doi={10.1016/j.cma.2018.12.039}
}