PASIEKA, Zbigniew et al. Concentration of metalloproteinase-2 and tissue inhibitor of metalloproteinase-2 in the serum of patients with benign and malignant thyroid tumours treated surgically. In Endocrine regulations. ISSN 1210-0668. ISSN 1336-0329. Bratislava : Slovak Academic Press, 2004, vol. 38, no. 2, p. 57-63.