@inproceedings{iecon94,
author = {Rui Araújo and Urbano Nunes and A. T. de Almeida},
title = {Robot 3D Force-Based Surface-Tracking},
booktitle = {Proc. IEEE 20th International Conference on Industrial Electronics, Control and Instrumentation (IECON'94)},
pages = {788-793},
address = {Bologna, Italy},
month = {September 5-9},
year = {1994},
publisher = {IEEE},
doi = {10.1109/IECON.1994.397886}
}