@article{Lee_2002,
title={Control of a heavy-duty robotic excavator using time delay control with integral sliding surface},
volume={10},
ISSN={0967-0661},
url={http://dx.doi.org/10.1016/s0967-0661(02)00027-8},
DOI={10.1016/s0967-0661(02)00027-8},
number={7},
journal={Control Engineering Practice},
publisher={Elsevier BV},
author={Lee,
Sung-Uk and Chang,
Pyung Hun},
year={2002},
month=jul,
pages={697–711} }