@inproceedings{inproceedings1c4d39ab,
title   = {A reduction technique applied to the nonlinear vibration of a portal frame. (em CD-Rom)},
author = {André, João Cyro},
year = {1998},
publisher = {Centro Internacional de Metodos Numericos en Ingenieria},
booktitle   = {World Congress on Computational Mechanics}
}