Bielykh, Olena. 2020. «THE IMPORTANCE OF NON-INVASIVE REGIONAL BRAIN OXIMETRY IN PREVENTING POSTOPERATIVE COGNITIVE DYSFUNCTION DURING LAPAROSCOPIC CHOLECYSTECTOMY IN ELDERLY AND SENILE PATIENTS». EUREKA: Health Sciences, вып. 4 (июль), 11-17. https://doi.org/10.21303/2504-5679.2020.001351.