1. Iterative Learning Control
2. Almqvist , H. 2009 Automatic bucket fill
3. Alshaer , B. J. Ingram , R. G. Krone , J. J. Berry , J. K. Harris , J. J. 2009 U.S. Patent No. 7555855, Automatic digging and loading system for work machine
4. Atlas Copco 2012 Atlas Copco underground loaders: Scooptram st14 technical specification http://www.atlascopco.ca/images/technical_specification_scooptram_st14_9851_2350_01_tcm836-1532858.pdf
5. Motion and path control for robotic excavation;Bernold;Journal of Aerospace Engineering,1993