Substitution of TMTSeF with TMTTF in (TMTSeF)2ClO4 : high pressure studies S.S.P. Parkin, C. Coulon, D. Jérome, J.M. Fabre et L. Giral J. Phys. France, 44 5 (1983) 603-607 DOI: 10.1051/jphys:01983004405060300