MADEJ ANDRZEJ, GIEREK-CIACIURA STANISŁAWA, HABERKA MACIEJ, LEKSTON-MADEJ JOANNA, BASIAK MARCIN, DOMAŃSKA OLGA, and OKOPIEŃ BOGUSŁAW. 2010. “Effects of Bisoprolol and Cilazapril on the Central Retinal Artery Blood Flow in Patients With Essential hypertension—preliminary Results”. Upsala Journal of Medical Sciences 115 (4):249–252. https://doi.org/10.3109/03009734.2010.487951.