Arst, H., Erm, A., Leppäranta, M., & Reinart, A. (2006). Radiative Characteristics of ice-covered fresh-and brackish-water Bodies. Proceedings of the Estonian Academy of Sciences. Geology, 55(1), 3-23. https://www.airitilibrary.com/Article/Detail?DocID=14060132-200603-201011080048-201011080048-3-23