Jędrys , Joanna. 2007. Записки Горного института 170 (2), 14-17. https://pmi.spmi.ru/pmi/article/view/7703.

Jędrys , Joanna. 2007. “Application of Magnetic Method in the Geological Research of Facial Differentiation of the Upper Jurassic Limestones in Krakow-Wielun Upland, Southern Poland”. Journal of Mining Institute 170 (2), 14-17. https://pmi.spmi.ru/pmi/article/view/7703.