Previous Article Next Article Table of Contents International Journal of Hydrogen Energy, Vol.44, No.37, 20633-20633, 2019 DOI10.1016/j.ijhydene.2019.06.110 Export Citation Preface to the special issue 4th ICCEIB 2018 conference Cheng CK, Ideris A, Vo DVN Please enable JavaScript to view the comments powered by Disqus.