Andreieva, I. O., D. P. Myrnyi, and M. M. Surmilo. “Blood Presure Variability in Patients With Obstructive Sleep Apnea Syndrome and Heart Failure With Preserved Ejection Fraction”. Medicni Perspektivi, vol. 23, no. 1(part2), May 2018, pp. 14-19, doi:10.26641/2307-0404.2018.1(part2).126933.