Kostenko, E., E. Butenko, M. Golubeva, and L. Arseneva. “Determining the Microelement Composition of Poppy Seeds Using solid­phase Spectrophotometry Method”. Eastern-European Journal of Enterprise Technologies, vol. 2, no. 11 (92), Mar. 2018, pp. 23-28, doi:10.15587/1729-4061.2018.127419.