V. GOVINDHAN; S. MURTHY; G. GOKILA. Fixed points and stability of lcosic functional equation in quasi- $\beta$-normed spaces. Malaya Journal of Matematik, India, v. 6, n. 01, p. 261–275, 2018. DOI: 10.26637/MJM0601/0030. Disponível em: https://www.malayajournal.org/index.php/mjm/article/view/804. Acesso em: 16 jul. 2024.