The Ca0.80CuO1.93 phase : New way of synthesis by the sol-gel method S. Phok, T. K. Jondo, Ph. Galez and J. L. JordaJ. Phys. IV France, 11 PR10 (2001) Pr10-99-Pr10-102DOI: https://doi.org/10.1051/jp4:20011013