1. Uskokovic MR, Partridge JJ, Narwid TA, Baggiolini EG: Synthesis of vitamin D metabolites and analogs. In: Vitamin D, Molecular Biology and Clinical Nutriton, Norman AW (ed), New York, Marcel Dekker, 1980, p 1–57.
2. Schnoes HK, DeLuca HF: Vitamin D, chemistry and biochemistry of a new hormonal system. In: Bioorganic Chemistry, Vol II, New York, Academic Press, 1978, p 299–335.
3. Norman A: Vitamin D, the calcium homeostatic steroid hormone, New York, Academic press, 1977.
4. Napoli JL, DeLuca HF: Blood calcium regulators. In: Burger’s Medicinal Chemistry, Fourth Edition, Part II,, Wolff ME (ed), New York, John Wiley and Sons, 1979, p 705–750.
5. Stern PH: The D vitamins and bone. Pharmacol. Reviews 32: 47–80, 1980.