AUTHOR=Zhang Liangyuan , Gepreel Khaled A. , Yu Jiahui TITLE=He’s frequency formulation for fractal-fractional nonlinear oscillators: a comprehensive analysis JOURNAL=Frontiers in Physics VOLUME=13 YEAR=2025 URL=https://www.frontiersin.org/journals/physics/articles/10.3389/fphy.2025.1542758 DOI=10.3389/fphy.2025.1542758 ISSN=2296-424X