@inbook{inbook514b0453,
title   = {The impact efficiency obtained from static load test performed on the SPT sampler},
author = {Aoki, Nelson and Esquivel, Edmundo Rogério and Neves, Luis F. S. and Cintra, José Carlos Angelo},
year = {2009},
publisher = {EESC-USP},
journal   = {Engenharia de fundações - passado recente e perspectivas : homenagem ao Prof. Nelson Aoki}
}