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Naclerio, N. D.; Hubicki, C. M.; Aydin, Y. O.; Goldman, D. I.; Hawkes, E. W. (October 2018). "Soft Robotic Burrowing Device with Tip-Extension and Granular Fluidization". 2018 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS). pp. 5918–5923. doi:10.1109/IROS.2018.8593530. ISBN978-1-5386-8094-0. S2CID57754473.