Gouvas M. and Sakellariou N. (2006): On the estimation of the monthly and annual average number of days with snow and snow cover in Greece . Proceedings of 8th Conference of Meteorology, Climatology and Atmospheric Physics. 24-26 May 2006, Athens , Greece , Vol. A: 129-136, (in Greek).
https://drive.google.com/file/d/1pQEmVpE_LN_l1TKbzDm0gyiO0oMtg5TB/view?usp=sharing
https://drive.google.com/file/d/1pQEmVpE_LN_l1TKbzDm0gyiO0oMtg5TB/view?usp=sharing