Towards Autonomous Robot Operation: Path Map Generation of an Unknown Area by a New Trapezoidal Approximation Method Using a Self Guided Vehicle and Shortest Path Calculation by a Proposed SRS Algorithm. - Kabir Ahmed; M. Shirajum Munir; A. S. M. Shihavuddin; M. Ashraful Hoque; K. K. Islam (PRICAI, 2008)