@article{articlebf71588c,
title   = {On the force and torque on systems of rigid bodies: A remark on an integral formula due to Howe},
author = {Ragazzo, Clodoaldo Grotta and Tabak, Esteban},
year = {2007},
doi = {10.1063/1.2730481},
journal   = {Physics of Fluids}
}