Vuković, M. “From Krasner’s Corpoid and Bourbaki’s Graduations to Krasner’s Graduations and Krasner-Vuković’s Paragraduations”. Sarajevo Journal of Mathematics, vol. 14, no. 2, Mar. 2019, pp. 175-90, https://sjm.anubih.ba/index.php/sjm/article/view/72.