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Lindner, F.; Stremme, W.; Schätzel, M. G.; Grasbon, F.; Paulus, G. G.; Walther, H.; Hartmann, R.; Strüder, L.: High-order harmonic generation at a repetition rate of 100 kHz. Physical Review A 68 (1), 013814, S. 1 - 8 (2003)

Ponman, T. J.; Sanderson, A. J. R.; Finoguenov, A.: The Birmingham-CfA cluster scaling project - III. Entropy and similarity in galaxy systems. Monthly Notices of the Royal Astronomical Society 343 (1), S. 331 - 342 (2003)

Kawaharada, M.; Makishima, K.; Takahashi, I.; Nakazawa, K.; Matsushita, K.; Shimasaku, K.; Fukazawa, Y.; Xu, H.: A new candidate for the dark group of galaxies, RX J0419+0225. Publications of the Astronomical Society of Japan 55, S. 573 - 577 (2003)

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