AUTHOR=Li Zhengyong , Fu Deyin , Li Haiting TITLE=The influence of bank-firm loan network structure on systemic risk: from the perspective of complex networks JOURNAL=Frontiers in Physics VOLUME=13 YEAR=2025 URL=https://www.frontiersin.org/journals/physics/articles/10.3389/fphy.2025.1548204 DOI=10.3389/fphy.2025.1548204 ISSN=2296-424X