https://scholarsmine.mst.edu/math_stat_facwork/834/
"Discrete, Continuous, Delta, Nabla, and Diamond-Alpha Opial Inequaliti" by Martin Bohner, Ramy R....
In this paper, we prove some new diamond-alpha dynamic inequalities of Opial type with one and with two weight functions on time scales. These results contain...
https://puceinvestiga.puce.edu.ec/es/publications/on-opial-type-inequality-for-a-generalized-fractional-integral-op-2/
On Opial-type inequality for a generalized fractional integral operator - Pontificia Universidad...
for a