Kachalin I, Liashchuk O, Šebela S. Periodical Measurements of VLF Radio Signals and Noise Sounds in Črna Jama (Postojnska Jama). AC [Internet]. 2017 Jul. 4 [cited 2024 Apr. 19];46(1). Available from: https://ojs.zrc-sazu.si/carsologica/article/view/1950