The X ray variability of NGC6814: Power spectra (1992)
Report
Done, C., Madejski, G., Mushotsky, R., Turner, T., Koyama, K., & Kunieda, H. (1992). The X ray variability of NGC6814: Power spectra. [No known commissioning body]

The broad-band X ray spectral variability of MKN 841 (1992)
Report
George, I., Nandra, K., Fabian, A., Turner, T., Done, C., & Day, C. (1992). The broad-band X ray spectral variability of MKN 841. [No known commissioning body]

The X ray variability of AGN and the anomalous behavior of NGC6814 (1992)
Report
Done, C., Madejski, G., Mushotzky, R., Turner, T., Koyama, K., & Kunieda, H. (1992). The X ray variability of AGN and the anomalous behavior of NGC6814. [No known commissioning body]