Stoichiometry and pressure dependence of Tc of YBa2Cu3Ox B. Bucher, E. Kaldis, Ch. Krüger and P. Wachter Europhys. Lett., 34 5 (1996) 391-394 Published online: 01 September 2002 DOI: 10.1209/epl/i1996-00469-9