PSOTA, Jozef et al. Monitoring the influence of chemical composition of electrical and dielectric properties of special glasses. In Vedecké práce MtF STU v Bratislave so sídlom v Trnave. Research papers Faculty of Materials Science and Technology Slovak University of Technology in Trnava. Vol. 19, č. 30 (2011), s.9-16. ISSN 1336-1589. M*