Phillip Quin Dac Dang Khoa Nguyen Thanh Long Vu 0003 Alen Alempijevic Gavin Paul Approaches for Efficiently Detecting Frontier Cells in Robotics Exploration. 616470 2021 8 Frontiers Robotics AI https://doi.org/10.3389/frobt.2021.616470 db/journals/firai/firai8.html#QuinNVAP21