Carvajal-Jiménez, J.-M., Ramirez-Silva, L.-F., & Ramirez, A. B. (2018). Estimation of Caving volumetric-flow using the ultrasonic Doppler method. CT&F - Ciencia, Tecnología Y Futuro, 8(1), 61–66. https://doi.org/10.29047/01225383.92