Milovanović, Gradimir V., and Igor Ž. Milovanović. “Some Results for Convex Sequences of Order \(k\)”.
Anal. Numér. Théor. Approx. 12, no. 1 (February 1, 1983): 77–81. Accessed April 14, 2025.
https://ictp.acad.ro/jnaat/journal/article/view/1983-vol12-no1-art9.