Білошицький, П.В., О.М. Ключко, and Ю.М. Онопчук. 2008. “Results of Research by Ukrainian Scientists in Elbrus Highlands of Factors on Health and Longevity”. Proceedings of National Aviation University 37 (4):108-17. https://doi.org/10.18372/2306-1472.37.1644.