Cook, R. M (1979). „Archaic Greek Trade: Three Conjectures 1. The Diolkos”. The Journal of Hellenic Studies. 99: 152—155. JSTOR630641. doi:10.2307/630641. (152)
Raepsaet, G. & Tolley, M. „Le Diolkos de l'Isthme à Corinthe: son tracé, son fonctionnement”. Bulletin de Correspondance Hellénique. 117: 233—261. 1993. doi:10.3406/bch.1993.1679. (256)
Fraser, P. M. (decembar 1961). „The ΔΙΟΛΚΟΣ of Alexandria”. The Journal of Egyptian Archaeology. 47: 134—138. JSTOR3855873. doi:10.2307/3855873.
jstor.org
Cook, R. M (1979). „Archaic Greek Trade: Three Conjectures 1. The Diolkos”. The Journal of Hellenic Studies. 99: 152—155. JSTOR630641. doi:10.2307/630641. (152)
Fraser, P. M. (decembar 1961). „The ΔΙΟΛΚΟΣ of Alexandria”. The Journal of Egyptian Archaeology. 47: 134—138. JSTOR3855873. doi:10.2307/3855873.
railwatch.org.uk
According to [Bradbury, Norman (novembar 2002). Face the facts on transport safety(PDF). Railwatch (Извештај). Архивирано из оригинала(PDF) 11. 10. 2010. г.], railways are the safest on both a per-mile and per-hour basis, whereas air transport is safe only on a per-mile basis.
sciencenews.gr
Lewis, M. J. T. (2001). „Railways in the Greek and Roman world”(PDF). Ур.: Guy, A.; Rees, J. Early Railways. A Selection of Papers from the First International Early Railways Conference. стр. 8—19. Архивирано из оригинала(PDF) 21. 7. 2011. г.
web.archive.org
Lewis, M. J. T. (2001). „Railways in the Greek and Roman world”(PDF). Ур.: Guy, A.; Rees, J. Early Railways. A Selection of Papers from the First International Early Railways Conference. стр. 8—19. Архивирано из оригинала(PDF) 21. 7. 2011. г.
According to [Bradbury, Norman (novembar 2002). Face the facts on transport safety(PDF). Railwatch (Извештај). Архивирано из оригинала(PDF) 11. 10. 2010. г.], railways are the safest on both a per-mile and per-hour basis, whereas air transport is safe only on a per-mile basis.