Epoyan, S., Karahiaur, A., Volkov, V. and Babenko, S. 2018. Research into the influence of vertical drainage elements on the operational efficiency of rapid filters. Eastern-European Journal of Enterprise Technologies. 1, 10 (91) (Feb. 2018), 62–69. DOI:https://doi.org/10.15587/1729-4061.2018.123559.