1. Nuclear star formation in the hotspot galaxy NGC 2903
2. Arnaud, K. A. 1996, Astronomical Data Analysis Software and Systems V, ed. G. Jacoby, & J. Barnes, ASP Conf. Ser., 101, 17
3. Hot Interstellar Gas in the Irregular Galaxy NGC 4449
4. Bomans, D. J., Tschöke, D., Hensler, G., et al. 2002, A&A, submitted
5. Briel, U., Aschenbach, B., Hasinger, G., et al. 1996, ROSAT User's Handbook, MPE, Garching