MAHESWARAN, A.; ELANGO, C. Effect of Delta Operator on Umbral Composition in Finite Operator calculus. JOURNAL OF ADVANCES IN MATHEMATICS, [S. l.], v. 12, n. 7, p. 6392–6397, 2016. DOI: 10.24297/jam.v12i7.5482. Disponível em: https://rajpub.com/index.php/jam/article/view/5482. Acesso em: 22 jul. 2024.