NOVOTNÁ, L., HRUBÝ, Martin, BENEŠ, Milan J., KUČEROVÁ, Z. Study of pepsin phosphorylation using immobilized metal affinity chromatography. Journal of Separation Science. 2008, 31(10), 1662-1668. ISSN 1615-9306. E-ISSN 1615-9314. Dostupné z: https://doi.org/10.1002/jssc.200700455