Stefanescu, A.; Kanbach, G.; Duscha, S.; Schrey, F.; Mühlegger, M.; Prymak, N.; Steinle, H.: GRB 060717 optical upper limit. GCN Circular 5333 (2006)

Stefanescu, A.; Kanbach, G.; Duscha, S.; Schrey, F.; Mühlegger, M.; Prymak, N.; Steinle, H.: GRB060707 possible optical confirmation. GCN Circular 5314 (2006)

Shen, S.; White, S. D. M.; Mo, H. J.; Voges, W.; Kauffmann, G.; Tremonti, C.; Anderson, S. F.: The soft X-ray properties of quasars in the sloan digital sky survey. Monthly Notices of the Royal Astronomical Society Letters 369 (4), pp. 1639 - 1653 (2006)

Barkhouse, W. A.; Green, P. J.; Vikhlinin, A.; Kim, D. W.; Perley, D.; Cameron, R.; Silverman, J.; Mossman, A.; Burenin, R.; Jannuzi, B. T. et al.; Kim, M.; Smith, M. G.; Smith, R. C.; Tananbaum, H.; Wilkes, B. J.: ChaMP serendipitous galaxy cluster survey. The Astrophysical Journal 645 (2 Part 1), pp. 955 - 976 (2006)

Becker, W.; Kramer, M.; Jessner, A.; Taam, R. E.; Jia, J. J.; Cheng, K. S.; Mignani, R.; Pellizzoni, A.; de Luca, A.; Słowikowska, A. et al.; Caraveo, P. A.: A multiwavelength study of the pulsar PSR B1929+10 and its X-ray trail. The Astrophysical Journal 645 (2 Part 1), pp. 1421 - 1435 (2006)

Stefanescu, A.; Schrey, F.; Kanbach, G.; Duscha, S.; Mühlegger, M.; Prymak, N.; Steinle, H.: GRB060707: possible optical confirmation. GCN Circular 5291 (2006)

de Martino, D.; Matt, G.; Mukai, K.; Bonnet-Bidaud, J. M.; Burwitz, V.; Gänsicke, B. T.; Haberl, F.; Mouchet, M.: The X-ray properties of the magnetic cataclysmic variable UU Columbae. Astronomy & Astrophysics 454 (1), pp. 287 - 294 (2006)

Hui, C. Y.; Becker, W.: X-ray observations of RX J0822-4300 and Puppis-A. Astronomy & Astrophysics 454 (2), pp. 543 - 552 (2006)

Kirsch, M. G. F.; Schönherr, G.; Kendziorra, E.; Freyberg, M. J.; Martin, M.; Wilms, J.; Mukerjee, K.; Breitfellner, M. G.; Smith, M. J. S.; Staubert, R.: The XMM-Newton view of the Crab. Astronomy & Astrophysics 453 (1), pp. 173 - 180 (2006)

Kuiper, L.; Hermsen, W.; den Hartog, P. R.; Collmar, W.: Discovery of luminous pulsed hard X-ray emission from anomalous X-ray pulsars 1RXS J1708-4009, 4U 0142+61, and 1E 2259+586 by INTEGRAL and RXTE. The Astrophysical Journal 645 (1 Part 1), pp. 556 - 575 (2006)

Lopes de Oliveira, R.; Motch, C.; Haberl, F.; Negueruela, I.; Janot-Pacheco, E.: New γ Cassiopeiae-like objects: X-ray and optical observations of SAO 49725 and HD 161103. Astronomy & Astrophysics 454 (1), pp. 265 - 276 (2006)

Miller, L.; Turner, T. J.; Reeves, J. N.; George, I. M.; Porquet, D.; Nandra, K.; Dovciak, M.: Variable iron-line emission near the black hole of Markarian 766. Astronomy & Astrophysics 453 (1), pp. L13 - L16 (2006)

Kim, D.-W.; Barkhouse, W. A.; Romero-Colmenero, E.; Green, P. J.; Kim, M.; Mossman, A.; Schlegel, E.; Silverman, J. D.; Aldcroft, T.; Anderson, C. et al.; Ivezic, Z.; Kashyap, V.; Tananbaum, H.; Wilkes, B. J.: Chandra multiwavelength project: normal galaxies at intermediate redshift. The Astrophysical Journal 644 (2 Part 1), pp. 829 - 842 (2006)

Andronov, I. L.; Baklanov, A. V.; Burwitz, V.: The unique magnetic cataclysmic variable V1432 Aql - third type of minima and synchronization. Astronomy & Astrophysics 452 (3), pp. 941 - 944 (2006)

Collinge, M. J.; Strauss, M. A.; Hall, P. B.; Ivezić, Z.; Munn, J. A.; Schlegel, D. J.; Zakamska, N. L.; Anderson, S. F.; Harris, H. C.; Richards, G. T. et al.; Schneider, D. P.; Voges, W.; York, D. G.; Margon, B.; Brinkmann, J.: Erratum: ``Optically identified BL lacertae objects from the sloan digital sky survey'' (AJ, 129, 2542 [2005]). The Astronomical Journal 131 (6), p. 3135 - 3135 (2006)

Finoguenov, A.; Henriksen, M. J.; Miniati, F.; Briel, U. G.; Jones, C.: A puzzling merger in A3266: the hydrodynamic picture from XMM-Newton. The Astrophysical Journal 643 (2 Part 1), pp. 790 - 796 (2006)

Hatzidimitriou, D.; Pietsch, W.; Misanovic, Z.; Reig, P.; Haberl, F.: Spectroscopy of the brightest optical counterparts of X-ray sources in the direction of M 31 and M 33. Astronomy & Astrophysics 451 (3), pp. 835 - 843 (2006)

Kahabka, P.; Haberl, F.: Supersoft sources in XMM-Newton small magellanic cloud fields - a symbiotic and a close binary or cooling neutron star. Astronomy & Astrophysics 452 (2), pp. 431 - 437 (2006)

Kahabka, P.; Haberl, F.: Supersoft sources in XMM-Newton small magellanic cloud fields - a symbiotic and a close binary or cooling neutron star. Astronomy & Astrophysics 452 (2), pp. 431 - 437 (2006)

Marcinkowski, R.; Denis, M.; Bulik, T.; Goldoni, P.; Laurent, P.; Rau, A.: GRB 030406 - an extremely hard burst outside of the INTEGRAL field of view. Astronomy & Astrophysics 452 (1), pp. 113 - 117 (2006)