@inproceedings{inproceedings57e1002f,
title   = {The standard penetration test},
author = {Mello, Victor F. B. de},
year = {1971},
publisher = {American Society of Civil Engineers},
booktitle   = {Panamerican Conference on Soil Mechanics and Foundation Engineering/Congreso Panamericano de Mecánica de Suelos e Ingenieráia de Fundaciones}
}