JO. Besenhard, E. Wudy, H. Mohwald, JJ. Nickl, W. Biberacher, W. Foag: ANODIC-OXIDATION OF GRAPHITE IN H2SO4 DILATOMETRY - INSITU X-RAY-DIFFRACTION IMPEDANCE SPECTROSCOPY. 1983Synthetic Metals: 7. ISBN 0379-6779 http://dx.doi.org/10.1016/0379-6779(83)90046-2