Melnyk, V., E. Melnyk, and B. Shulga. “Identification of Human Emotions Using the Keras and TensorFlow Neural Network.”. COMPUTER-INTEGRATED TECHNOLOGIES: EDUCATION, SCIENCE, PRODUCTION, no. 36, Nov. 2019, pp. 109-22, doi:10.36910/6775-2524-0560-2019-36-11.