GUNAWAN, Alexander Agung Santoso. Hubungan Deret Bertingkat Berdasarkan Bilangan Eulerian dengan Operator Beda. ComTech: Computer, Mathematics and Engineering Applications, [S. l.], v. 2, n. 1, p. 154–159, 2011. DOI: 10.21512/comtech.v2i1.2727. Disponível em: https://journal.binus.ac.id/index.php/comtech/article/view/2727. Acesso em: 1 jul. 2025.