Tsangaratos 2019, p. 4, Fig. 1-1 The figure depicts a catchment outlined in black with the tributaries shown in detail and a terrain map color coding the altitudes. Tsangaratos, Paraskevas; et al. (2019). "Spatial Analysis of Extreme Rainfall Values Based on Support Vector Machines Optimized by Genetic Algorithms: The Case of Alfeios Basin, Greece"(PDF). In Pourghasemi, Hamid Reza; Gokceoglu, Candan (eds.). Spatial Modeling in GIS and R for Earth and Environmental Sciences. Amsterdam; Oxford; Cambridge: Elsevier Inc. Archived from the original(PDF) on 2021-06-07. Retrieved 2021-06-07. This source publishes mathematical correlations of rainfall in the studied catchment with several geophysical factors.
ELSTAT 2018, p. 11, Table 1. Surface Area of Greece ELSTAT (2018). "Greece in Figures". Greece in Figures (January–March). This publication by the Hellenic Statistical Authority (ELSTAT) summarizes population, cultural, and geophysical statistics for the various regions of Greece.
ELSTAT 2018, p. 12, Table 5, Principal rivers of Greece. ELSTAT (2018). "Greece in Figures". Greece in Figures (January–March). This publication by the Hellenic Statistical Authority (ELSTAT) summarizes population, cultural, and geophysical statistics for the various regions of Greece.
Tsangaratos 2019, p. 4, Fig. 1-1 The figure depicts a catchment outlined in black with the tributaries shown in detail and a terrain map color coding the altitudes. Tsangaratos, Paraskevas; et al. (2019). "Spatial Analysis of Extreme Rainfall Values Based on Support Vector Machines Optimized by Genetic Algorithms: The Case of Alfeios Basin, Greece"(PDF). In Pourghasemi, Hamid Reza; Gokceoglu, Candan (eds.). Spatial Modeling in GIS and R for Earth and Environmental Sciences. Amsterdam; Oxford; Cambridge: Elsevier Inc. Archived from the original(PDF) on 2021-06-07. Retrieved 2021-06-07. This source publishes mathematical correlations of rainfall in the studied catchment with several geophysical factors.