M. ANANDHI; C. JANAKI. \(\theta\)-local function and \( \psi_\theta\)-operator . Malaya Journal of Matematik, India, v. 4, n. 03, p. 476–487, 2016. DOI: 10.26637/mjm403/018. Disponível em: https://www.malayajournal.org/index.php/mjm/article/view/560. Acesso em: 24 nov. 2024.