Gürkan, R. and Gürkan, N.Z. 2019. Determination of trace amounts of selenium in natural spring waters and tea samples by catalytic kinetic spectrophotometry. Eclética Química. 44, 4 (Oct. 2019), 57–72. DOI:https://doi.org/10.26850/1678-4618eqj.v44.4.2019.p57-72.