DOLINSKÝ, Peter, Fridrich VALACH, Magdaléna VÁCZYOVÁ, and Milan HVOŽDARA. “Geomagnetic Ground Survey in Slovakia for the 2007.5 Epoch”. Contributions to Geophysics and Geodesy 39, no. 3 (September 1, 2009): 255–272. Accessed August 16, 2025. https://journal.geo.sav.sk/cgg/article/view/21.