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Some corollaries and applications are mentioned.<\/jats:p>","DOI":"10.3390\/axioms15010070","type":"journal-article","created":{"date-parts":[[2026,1,20]],"date-time":"2026-01-20T11:27:58Z","timestamp":1768908478000},"page":"70","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Inequality on Three Intervals for Higher-Order Convex Functions"],"prefix":"10.3390","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-5510-2085","authenticated-orcid":false,"given":"Josip","family":"Pe\u010dari\u0107","sequence":"first","affiliation":[{"name":"Department of Mathematical, Physical and Chemical Sciences, Croatian Academy of Sciences and Arts, University of Zagreb, 10000 Zagreb, Croatia"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9096-7826","authenticated-orcid":false,"given":"Jinyan","family":"Miao","sequence":"additional","affiliation":[{"name":"Institute for Sustainable Industries & Liveable Cities (ISILC), Victoria University, Melbourne, VIC 8001, Australia"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5606-9996","authenticated-orcid":false,"given":"\u00d0ilda","family":"Pe\u010dari\u0107","sequence":"additional","affiliation":[{"name":"Department of Media and Communication, University North, 48000 Koprivnica, Croatia"}]}],"member":"1968","published-online":{"date-parts":[[2026,1,20]]},"reference":[{"key":"ref_1","unstructured":"Popoviciu, T. 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