We prove some integral inequalities related to Feng Qi's inequality from [Several integral inequalities, J. Inequal. Pure Appl. Math. 1 (2000), No. 2, 7p., Article No. 19] and obtain a few corollaries.
"Some Qi-type integral inequalities involving several weight functions." Tbilisi Math. J. 12 (2) 137 - 152, April 2019. https://doi.org/10.32513/tbilisi/1561082573