Shearer MJ, Newman P (octombrie 2008). „Metabolism and cell biology of vitamin K”. Thrombosis and Haemostasis. 100 (4): 530–47. doi:10.1160/TH08-03-0147. PMID18841274.
Vermeer C, Braam L (). „Role of K vitamins in the regulation of tissue calcification”. Journal of Bone and Mineral Metabolism. 19 (4): 201–6. doi:10.1007/s007740170021. PMID11448011.
Shearer MJ, Newman P (octombrie 2008). „Metabolism and cell biology of vitamin K”. Thrombosis and Haemostasis. 100 (4): 530–47. doi:10.1160/TH08-03-0147. PMID18841274.
Vermeer C, Braam L (). „Role of K vitamins in the regulation of tissue calcification”. Journal of Bone and Mineral Metabolism. 19 (4): 201–6. doi:10.1007/s007740170021. PMID11448011.