Mine Tunnel Exploration Using Multiple Quadrupedal Robots. - Ian D. Miller; Avraham Cohen; Adarsh Kulkarni; James Laney; Camillo Jose Taylor; Vijay Kumar 001; Fernando Cladera Ojeda; Anthony Cowley; Shreyas S. Shivakumar; Elijah S. Lee; Laura Jarin-Lipschitz; Akhilesh Bhat; et al. (IEEE Robotics Autom. Lett., 2020)