Петров (Petrov), Стојмир (Stojmir), and Осман (Osman) Бејтовиќ (Bejtovikj). “Plasma-Renin Activity of Normotensive, Metacorticoide, Spontaneous Hypertensive and Spontaneous Hypertensive Stroke Prone Rats”. Medicinska Misla, vol. 27, no. 2, Jan. 2017, pp. 46-48, https://www.id-press.eu/medmis/article/view/977.