Amorim, S., F. Quintas, G. Mendes, J. Araújo, and N. Loureiro. “Assessment of Serum 25 (OH) Vitamin D Status in Elite Portuguese Cycling Athletes”. Journal of Science and Cycling, vol. 4, no. 2, Dec. 2015, https://jsc-journal.com/index.php/JSC/article/view/220.