Gregor Cedilnik; et al. (2018). "Pushing the Reach of Fiber Distributed Acoustic Sensing to 125 km Without the Use of Amplification". IEEE Sensors Letters. 3 (3): 1–4. doi:10.1109/LSENS.2019.2895249. S2CID71149063.
Gregor Cedilnik; et al. (2018). "Pushing the Reach of Fiber Distributed Acoustic Sensing to 125 km Without the Use of Amplification". IEEE Sensors Letters. 3 (3): 1–4. doi:10.1109/LSENS.2019.2895249. S2CID71149063.