%0 Journal Article %J Physical Review Letters %D 2008 %T Calcium as the superior coating metal in functionalization of carbon fullerenes for high-capacity hydrogen storage %A Mina Yoon %A Shenyuan Yang %A Christian Hicke %A Enge Wang %A David Geohegan %A Zhenyu Zhang %B Physical Review Letters %G eng %N 20 %] 000256206400061 %R 10.1103/PhysRevLett.100.206806