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Singh, Puneet; Sehgal, Anuj; Shah, Parth; Kadarusman, Jason (2007). "Autonomous underwater unmanned vehicular recovery system based on low-cost inter-aural time differentiation passive sonar". 2007 Mediterranean Conference on Control & Automation. pp. 1–5. doi:10.1109/MED.2007.4433687. ISBN978-1-4244-1281-5. S2CID16150321.