TY - RPRT TI - A Petri-net coordination model for an intelligent mobile robot AU - Wang, F.-Y. AU - Kyriakopoulos, K. J. AU - Tsolkas, A. AU - Saridis, G. N. PY - 1990 UR - https://ntrs.nasa.gov/citations/19920028804 ID - 19920028804 ER -