Shinya Fujii, Yoshitomo Suhara, and Hiroyuki Kagechika. Recent Advances in the Medicinal Chemistry of Vitamin K Derivatives: An Overview (2000-2021). IntechOpen. 2022. DOI: 10.5772/intechopen.101667.
TAKAYAMA, H.; KITTAKA, A.; FUJISHIMA, T.; SUHARA, Y. Design, synthesis, and biological studies of the A-ring-modified 1,25-dihydroxyvitamin D3 analogs. Recent Results in Cancer Research 164 (Vitamin D Analogs in Cancer Prevention and Therapy), 289-317, 2003.