Lukoševičius, Viktoras, and Tomas Duksa. “Eratosthenes’ Map of the Oecumene”. Geodesy and Cartography 38, no. 2 (June 29, 2012): 81-85. Accessed September 22, 2019. https://journals.vgtu.lt/index.php/GAC/article/view/4746.