1. New York Times December 31st, 1986
2. Business Week
3. Science 29th May, 1987
4. Possible High Tc Superconductivity In The Ba-La-Cu-O System;Bednorz;Zeitschrift fur Physik B,1986
5. Susceptibility Measurements Support High Tc Superconductivity In The Ba-La-Cu-O System;Bednorz;Europhysics Letters,1987