Pečarić, Josip E. “On an Integral Inequality of A. Lupaș”. Rev. Anal. Numér. Théor. Approx. 23, no. 1 (August 1, 1994): 101–102. Accessed November 25, 2024. https://ictp.acad.ro/jnaat/journal/article/view/1994-vol23-no1-art11.