ZIELIŃSKI, A. and CHOIŃSKI, A. 2021. Ice cover thickness of selected aeolic, karst and river lakes in Świętokrzyskie Voivodeship. Badania Fizjograficzne Seria A - Geografia Fizyczna. 12, A 72 (Dec. 2021), 191–201. DOI:https://doi.org/10.14746/bfg.2021.12.11.