Journal of Mathematical Inequalities · Volume 9, Issue 2 Multiple Opial-type inequalities for general kernels with applications 09-32 Pages 381-396 DOI 10.7153/jmi-09-32 Downloads Short PDF Full PDF PNG Authors Sajid Iqbal Josip Pečarić Muhammad Samraiz Keywords Opial's inequality kernel fractional derivative Widder's derivatives linear differential operators Green's function Subject classes 26D15 26D10 26A33