• "Monitoring the Evolution of the X-Ray Remnant of SN 1987A"
  Park, Sangwook, Burrows, David N., Garmire, Gordon P., Nousek, John A., McCray, Richard, Michael, Eli, Zhekov, Svetozar
  The Astrophysical Journal, Volume 567, Issue 1, pp. 314-322
• "The X-Ray Spectrum of Supernova Remnant 1987A"
  Michael, Eli, Zhekov, Svetozar, McCray, Richard, Hwang, Una, Burrows, David N., Park, Sangwook, Garmire, Gordon P., Holt, Stephen S., Hasinger, Günther
  The Astrophysical Journal, Volume 574, Issue 1, pp. 166-178