W. Ledesma-Giraldez and Esmila Yeime, “Characterization of influent and effluent at a wastewater treatment plant with trickling filters in the high Andean region of PeruCharacterization of influent and effluent at a wastewater treatment plant with trickling filters in the high Andean region of Peru”, Univ. Salud, vol. 28, no. 2, p. e9491, May 2026.