G. MAYELVAGANAN; S. SEKAR. A quadratic functional equation stability in 2-Banach spaces. Malaya Journal of Matematik, India, v. 8, n. 04, p. 2045–2049, 2020. DOI: 10.26637/MJM0804/0122. Disponível em: https://www.malayajournal.org/index.php/mjm/article/view/1840. Acesso em: 5 oct. 2024.