Guglielmi, G., M. Nasuto, L. Avery, and X. Cheng. “Bone Densitometry: Current Status and Future Trends”. JOURNAL OF GERONTOLOGY AND GERIATRICS, Vol. 64, no. 3, Sept. 2016, pp. 97-103, https://www.jgerontology-geriatrics.com/article/view/172.