Peretiatko, C. D. S., E. A. Hupalo, J. R. da R. Campos, and C. R. B. Parabocz. “Efficiency of Zinc and Calcium Ion Crosslinking in Alginate-Coated Nitrogen Fertilizer”. Orbital: The Electronic Journal of Chemistry, Vol. 10, no. 3, May 2018, pp. 218-25, https://periodicos.ufms.br/index.php/orbital/article/view/16348.