Koller Šarić, K. and Kovac Konrad, P. 2017. The deepest finding of an olm (Proteus anguinus): Zagorska peć, Ogulin, Croatia. Acta Carsologica. 46, 2-3 (Dec. 2017). DOI:https://doi.org/10.3986/ac.v46i2-3.5152.