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Lin, Lanny; Goodrich, Michael A. . (2009). [IEEE 2009 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS 2009) - St. Louis, MO, USA (2009.10.10-2009.10.15)] 2009 IEEE/RSJ International Conference on Intelligent Robots and Systems - UAV intelligent path planning for Wilderness Search and Rescue. , (), 709–714. doi:10.1109/IROS.2009.5354455 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research