Čar, Jože, and Stanka Šebela. 2016. “Bedding Planes, Moved Bedding Planes, Connective Fissures and Horizontal Cave Passages (Examples from Postojnska Jama Cave)”. Acta Carsologica 27 (2). Ljubljana, Slovenija. https://doi.org/10.3986/ac.v27i2.503.