Krobicki M, Golonka J. Geological history of the Pieniny Klippen Belt and Middle Jurassic black shales as one of the oldest deposits of this region – stratigraphical position and palaeoenvironmental significance. geotour [Internet]. 2018Jul.4 [cited 2024May5];(13):3. Available from: https://journals.agh.edu.pl/geotour/article/view/686