AUTHOR=Goto Keiichi , Watanabe Tsutomu , Hosoda Mitsuru , Minoura Shintaro TITLE=Commentary: Fatigue Life Assessment Method for Prestressed Concrete Sleepers JOURNAL=Frontiers in Built Environment VOLUME=4 YEAR=2018 URL=https://www.frontiersin.org/journals/built-environment/articles/10.3389/fbuil.2018.00019 DOI=10.3389/fbuil.2018.00019 ISSN=2297-3362