Previous Article Next Article Table of Contents International Journal of Hydrogen Energy, Vol.40, No.35, 11346-11347, 2015 DOI10.1016/j.ijhydene.2015.04.020 Export Citation Preface to the special issue on "20th World Hydrogen Energy Conference, WHEC 2014" Kim YB, Oh BS, Abd El-Aty AM Please enable JavaScript to view the comments powered by Disqus.