Popov, V.V. and Bolshak, O.O. 2019. Original method of posterior aortoplasty for aortic valve replacement in cases with narrow aortic ostium. Ukrainian Journal of Cardiovascular Surgery. 1 (34) (Mar. 2019), 24-26. DOI:https://doi.org/10.30702/ujcvs/19.35/05(024-026).