Pečarić, Josip E., and Sever S. Dragomir. “Some Remarks on Chebyshev’s Inequality”. Anal. Numér. Théor. Approx. 19, no. 1 (February 1, 1990): 59–65. Accessed November 22, 2024. https://ictp.acad.ro/jnaat/journal/article/view/1990-vol19-no1-art10.