@misc{misc2611299c,
title   = {Acoustic levitation transportation of small objects using a ring-type vibrator},
author = {Thomas, Gilles Pierre Loïc and Andrade, Marco Aurélio Brizzotti and Adamowski, Júlio Cezar and Silva, Emílio Carlos Nelli},
year = {2015},
doi = {10.1016/j.phpro.2015.08.041},
booktitle   = {International Congresson Ultrasonics}
}