ZUBIASHVILI, MARIA, et al. “SURFACTANT (SP-D) AND LUNG FUNCTIONAL DATA RELATIONSHIP WITH ECHOCARDIOGRAPHIC INDICATORS OF HEART ISCHEMIC AND CHRONIC OBSTRUCTIVE PULMONARY DISEASES”. Experimental and Clinical Medicine Georgia, no. 1, Mar. 2024, pp. 35-48, doi:10.52340/jecm.2024.01.05.