Gallium Crystal Chemistry in Synthetic Goethites F. Martin, Ph. Ildefonse, J.L. Hazemann, P.E. Mathe, Y. Noack, O. Grauby, D. Beziat and Ph. de Parseval J. Phys. IV France, 7 C2 (1997) C2-821-C2-822 DOI: 10.1051/jp4:1997247