Holik, A.-A., and D. . Trivić. “The Effects of Online Learning about the Brønsted-Lowry Theory of Acids and Bases in the First Grade of Grammar School During the COVID-19 Pandemic: Scientific Paper”. Journal of the Serbian Chemical Society, vol. 89, no. 2, Mar. 2024, pp. 275-89, doi:10.2298/JSC230330059H.