Andrica, D., & Buzeţeanu, Şerban. (1987). Relatively dense universal sequences for the class of continuous periodical functions of period \(T\).
Anal. Numér. Théor. Approx.,
16(1), 1-9.
https://ictp.acad.ro/jnaat/journal/article/view/1987-vol16-no1-art1