The words written by Axel Kahn in 2001, in french and english ; Link to the pdf file
The words written by Peter Day in 2000, in Nature: link
The words written by Michel Verdaguer and Jean-Jacques Girerd in Actualité chimique in 2000
The attractive legacy of Olivier Kahn written by Guillaume Chastanet, Rodolphe Clérac, Boris Le Guennic and Sébastien Pillet in Eur. J. Inorg. Chem. in 2018
The words of Prof Jatinder Yakkmi.