KIRCHNER, K., KOPECKÝ, J., WAGNER, J. Present-day state of knowledges of pseudokarst phenomenon in the Podyjí national park. In: ESZTERHÁS, I., SÁRKÖZI, S., eds. Proceedings of the 6th international symposium on pseudokarst. Hungary: Vulkán szpeleologiai Kollektíva Isztimér, 1997, s. 182.