G. Bednorz

New layered perovskites in the SrRuO system: A transmission electron microscope study

T. Williams, A. Reller, F. Lichtenberg, 1991 .

On the crystal structures of La2Ti2O7 and La5Ti5O17 : high-resolution electron microscopy

Tim Williams, Daniel Widmer, Armin Reller, 1991 .

Oxygen vacancy ordering in superconducting Nd2−xCexCuO4−y

Y. Maeno, T. Williams, A. Reller, 1989 .