O. ERSOY, R. ÜNLÜ ERSOY, N. BULUT, Özlem YÖRÜK, H. DEMİRCİ, and S. YILDIRIM, “Diagnostic value of high molecular weight alkaline phosphatase in detection of liver metastasis in gastrointestinal system malignancies”, Turkish Journal of Gastroenterology, vol. 12, no. 4, pp. 253–257, Jan. 2001.