Bhardwaja, A., Elsner, R. F., Gladstone, G. R., Cravens, T. E., Lisse, C. M., Dennerl, K., Branduardi-Raymont, G., Wargelin, B. J., Waite, J. H., Robertson, I., Østgaard, N., Beiersdorfer, P., Snowden, S. L., & Kharchenko, V. (2007). X-rays from solar system objects.