AUTHOR=Mazher Khwaja Mateen TITLE=Review of studies on risk allocation and sharing in public-private partnership projects for infrastructure delivery JOURNAL=Frontiers in Built Environment VOLUME=11 YEAR=2025 URL=https://www.frontiersin.org/journals/built-environment/articles/10.3389/fbuil.2025.1505891 DOI=10.3389/fbuil.2025.1505891 ISSN=2297-3362