2SIVAKUMAR P L, VARGHESE K, BABU N R. Automated path planning of cooperative crane lifts using heuristic search [ J ]. Journal of Computing in Civil Engineering ASCE, 2003,17 ( 3 ) : 197-207.
3YAGBMOUR K. Building Embedded Linux Systems [ M ]. O'Reilly Media, Inc. ,2003.
