References

 
• Aharonian, F. A., Akhperjanian, A. G., Barrio, J. A., et al. 1999, A&A, 342, 69 NASA ADS  
• Aharonian, F. A., Akhperjanian, A. G., Barrio, J. A., et al. 2000a, ApJ, 539, 317 NASA ADS  
• Aharonian, F. A., Akhperjanian, A. G., Barrio, J. A., et al. 2000b, A&A, 361, 1073 NASA ADS  
• Aharonian, F. A., Akhperjanian, A. G., Barrio, J. A., et al. 2000c, A&A, submitted  
• Aharonian, F. A., & Atoyan, A. M. 1999, A&A, 351, 330 NASA ADS  
• Alexandreas, D. E., Berley, D., Biller, S., et al. 1993, Nucl. Instr. Meth. A, 328, 570  
• Allen, G. E., Keohane, J. W., Gotthelf, E. V., et al. 1997, ApJ, 487, L97 NASA ADS  
• Allen, G. E., Gotthelf, E. V., & Petre, R. 1999, in Proc. of the 26th ICRC, ed. D. Kieda, M. Salamon, & B. Dingus (Salt Lake City), vol. 3, 480 ff  
• Atoyan, A. M., Tuffs, R. J., Aharonian, F. A., & Völk, H. J. 2000a, A&A, 354, 915 NASA ADS  
• Atoyan, A. M., Aharonian, F. A., Tuffs, R. J., & Völk, H. J. 2000b, A&A, 355, 211 NASA ADS  
• Baring, M. G. 2000, in Snowbird Workshop on TeV Gamma-Ray Astronomy, Towards a Major Atmospheric Cherenkov Detector - VI, ed. B. H. Dingus, M. H. Salamon, & D. B. Kieda (AIP, New York), 173  
• Berezhko, E. G., Ksenofontov, L. T., & Petukhov, S. I. 1999, in Proc. of the 26th ICRC, ed. D. Kieda, M. Salamon, & B. Dingus (Salt Lake City), vol. 4, 431  
• Berezhko, E. G., & Völk, H. J. 1997, Astropart. Phys., 3, 183  
• Berezhko, E. G., & Völk, H. J. 2000a, A&A, 357, 283 NASA ADS  
• Berezhko, E. G., & Völk, H. J. 2000b, Astropart. Phys., 14, 201 NASA ADS  
• Drury, L. O., Aharonian, F. A., & Völk, H. J. 1994, A&A, 287, 959 NASA ADS  
• Eadie, W. T., Drijard, D., James, F. E., Roos, M., & Sadoulet, B. 1971, Statistical Methods in Experimental Physics, North-Holland, Amsterdam  
• Esposito, J. A., Hunter, S. D., Kanbach, G., & Sreekumar, P. 1996, ApJ, 461, 820 NASA ADS  
• Favata, F., Vink, J., Fiume, D. D., et al. 1997, A&A, 324, L49 NASA ADS  
• Fesen, R. A., & Becker, R. H. 1991, ApJ, 371, 621 NASA ADS  
• Goret, P., Gouiffes, C., Nuss, E., & Ellison, D. C. 1999, in Proc. of the 26th ICRC, ed. D. Kieda, M. Salamon, & B. Dingus (Salt Lake City), vol. 3, 496  
• Heß, M. 1998, Ph.D. Thesis, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany  
• Hofmann, W., Jung, I., Konopelko, A., et al. 1999, Astropart. Phys, 12, 135 NASA ADS  
• Holt, S. S., Gotthelf, E. V., Tsunemi, H., & Negoro, H. 1994, PASJ, 46, L151 NASA ADS  
• Hughes, J. P., Rakowski, C. E., Burrows, D. N., & Slane, P. O. 2000, ApJ, 528, L109 NASA ADS  
• Iyudin, A. F., Diehl, R., Lichti, G. G., et al. 1997, in 2nd INTEGRAL Workshop The Transparent Universe, St. Malo, France (ESA Publications Division, ESTEC, Noordwijk, The Netherlands), 37  
• Konopelko, A., Aharonian, F., Hemberger, M., et al. 1999a, J. Phys. G, 25, 1989 NASA ADS  
• Konopelko, A., Hemberger, M., Aharonian, F., et al. 1999b, Astropart. Phys., 10, 275 NASA ADS  
• Koyama, K., Petre, R., Gotthelf, E. V., et al. 1995, Nature, 378, 255 NASA ADS  
• Koyama, K., Kinugasa, K., Matsuzaki, K., et al. 1997, PASJ, 49, L7 NASA ADS  
• Lessard, R. W., Bond, I. H., Boyle, P. J., et al. 1999, in Proc. of the 26th ICRC, ed. D. Kieda, M. Salamon, & B. Dingus (Salt Lake City), vol. 3, 488  
• Li, T.-P., & Ma, Y.-Q. 1983, ApJ, 272, 317 NASA ADS  
• Muraishi, H., Tanimori, T., Yanagita, S., et al. 2000, A&A, 345, L57  
• Pühlhofer, G., Daum, A., Hermann, G., et al. 1997, Astropart. Phys., 8, 101 NASA ADS  
• Pühlhofer, G., Bernlöhr, K., & Daum, A. 1999a, in Proc. of the 26th ICRC, ed. D. Kieda, M. Salamon, & B. Dingus (Salt Lake City), vol. 4, 77  
• Pühlhofer, G., Völk, H., & Wiedner, C. A. 1999b, in Proc. of the 26th ICRC, ed. D. Kieda, M. Salamon, & B. Dingus (Salt Lake City), vol. 3, 492  
• Reed, J. E., Hester, J. J., Fabian, A. C., & Winkler, P. F. 1995, ApJ, 440, 706 NASA ADS  
• Tanimori, T., et al. 1998, ApJ, 497, L25 NASA ADS  
• Vink, J., Maccarone, M. C., Kaastra, J. S., et al. 1999, A&A, 344, 289 NASA ADS  
• Völk, H. J. 1997, in Kruger National Park Workshop on TeV Gamma-Ray Astronomy, Towards a Major Atmospheric Cherenkov Detector - V, 87, Space Reasearch Unit, WESTPRINT-Potchefstroom, South Africa, ed. O. C. de Jager

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