Yavas, M. ., Guran, A. and Ekinci, Y. (2022) “Analysis of Public Agenda during Covid-19 Pandemics Based on Turkish and English Tweets Using Nonnegative Matrix Factorization and Hypothesis Testing”, Elektronika ir Elektrotechnika, 28(4), pp. 65-73. doi: 10.5755/j02.eie.31196.