If you are using the ROBOOP package, please let me know. If you want to cite this package in some of your work, please use [18] or the following BIBTEX entry:
@ARTICLE{Gourdeau97, author = {Richard Gourdeau}, month = sep, year = 1997, title = {Object Oriented Programming for Robotic Manipulators Simulation}, journal = {IEEE Robotics and Automation Magazine}, volume = 4, number = 3, pages = {21--29} }