X-ray study of the anion ordering transition in di (tetramethyltetraselenafulvalen)-ium perchlorate (TMTSF)2ClO4 : quenching and irradiation effects R. Moret, J.P. Pouget, R. Comès et K. BechgaardJ. Phys. France, 46 9 (1985) 1521-1532DOI: https://doi.org/10.1051/jphys:019850046090152100