Tripathi, P., L. Bala, R. Saxena, S. Yachha, R. Roy, and C. Khetrapal. “1H NMR Spectroscopic Study of Blood Serum for the Assessment of Liver Function in Liver Transplant Patients”. Journal of Gastrointestinal and Liver Diseases, vol. 18, no. 3, Sept. 2009, pp. 329-36, https://www.jgld.ro/jgld/index.php/jgld/article/view/2009.3.11.