LIKO, Artion Kashuri, Rozana; DU, Ting-Song. SOME NEW OSTROWSKI TYPE FRACTIONAL INTEGRAL INEQUALITIES FOR BETA (r, g)-PREINVEX FUNCTIONS VIA CAPUTO k-FRACTIONAL DERIVATIVES. Matematichki Bilten, [S. l.], v. 43, n. 1, 2019. DOI: 10.37560/matbil1190047. Disponível em: https://bilten.smm.org.mk/index.php/bilten/article/view/1873. Acesso em: 13 jun. 2026.