Indarto, Indarto, Elida Novita, Sri Wahyuningsih, Nur Defitri Herlinda, and Entin Hidayah. 2019. “Application of Recursive Digital Filter (RDF) Methods for Baseflow Separation: Study at Brantas Watershed”. Journal of Natural Resources and Environmental Management 9 (3), 626-40. https://doi.org/10.29244/jpsl.9.3.626-640.