Trends and Challenges of Hybrid Renewable Energy Systems (Solar–Wind–Biomass): A Bibliometric AnalysisHusni Mubarok, Beni Setiawan, Andi Kristanto, Sri Setyo Iriani, Putri Lintang Utami and Yossiri YossatornE3S Web Conf., 709 (2026) 04002DOI: https://doi.org/10.1051/e3sconf/202670904002