-
Borrel V., L. Bouchet, E. Jourdain, J.P. Roques, M. Vargas, A. Goldwurm, M. Denis, J. Paul, E. Churazov, M. Gilfanov, A. Finoguenov, R. Sunyaev, A. Dyachkov, N. Khavenson, and Chulkov.
"A persistent hard X-ray source observed in the Terzan 1 globular cluster by the SIGMA telescope". A&A, 1996.
-
Borrel V., L. Bouchet, E. Jourdain, J.P. Roques, M. Vargas, A. Goldwurm, M. Denis, J. Paul, R. Sunyaev, E. Churazov, M. Gilfanov, S. Grebenev, and M. Pavlinsky.
"SIGMA detection of hard X-ray emission from the Terzan 1 Globular Cluster". Ap.J., 1996.
-
Goldwurm A., M. Vargas, J. Paul, S. Faisse, L. Bouchet, L. Borrel, J.P. Roques, P. Mandrou, R. Sunyaev, E. Churazov, M. Gilfanov, N. Khavenson, A. Dyachkov, A. Sheikhet, R. Kremnev, and V. Kovtunenko.
"SIGMA hard X-ray observations of the Galactic Bulge Source SLX-1735-269". A&A, 1996.