AKKİRPİK, M. (2008) “Relationship between overexpression of ras p21 oncoprotein and K-ras codon 12 and 13 mutations in Turkish colorectal cancer patients”, Turkish Journal of Gastroenterology, 19(1), pp. 22–27. Available at: https://turkjgastroenterol.org/index.php/tjg/article/view/1624 (Accessed: 1 January 2026).