| RefNo --- | Text --- |
|---|---|
| 1 | 2EG, Thompson et al., Cat. <J/ApJS/101/259> |
| 2 | Brazier et al., 1998MNRAS.295..819B |
| 3 | von Montigny et al., 1995ApJ...440..525V |
| 4 | Mukherjee et al., 1997ApJ...490..116M |
| 5 | Verbunt et al., 1996A&A...311L...9V |
| 6 | Kuiper et al., 1999, in Proc. Third INTEGRAL Workshop, The Extreme Universe, in press |
| 7 | Hermsen et al., 1999, Adv. Space Res., submitted |
| 8 | Tavani et al., 1998ApJ...497L..89T |
| 9 | Mattox et al., 1995IAUC.6161....1M |
| 10 | 2EGS, Thompson et al., Cat. <J/ApJS/107/227> |
| 11 | Mattox et al., 1997, Cat. <J/ApJ/481/95> |
| 12 | Halpern & Eracleous, 1997IAUC.6639R...1H |
| 13 | McGlynn et al., 1997ApJ...481..625M |
| 14 | Fichtel et al., 1994ApJS...94..551F |
| 15 | Sturner & Dermer, 1995A&A...293L..17S |
| 16 | Lamb & Macomb, 1997ApJ...488..872L |
| 17 | Esposito et al., 1996ApJ...461..820E |
| 18 | Mukherjee et al., 1995ApJ...445..189M |
| 19 | Zook et al., 1997AJ....114.1121Z |
| 20 | Bloom et al., 1997ApJ...488L..23B |
| 21 | Mattox et al., 1997ApJ...476..692M |
| 22 | Nolan et al., 1996ApJ...459..100N |
| 23 | Tavani et al., 1997ApJ...479L.109T |
| 24 | Brazier et al., 1996MNRAS.281.1033B |
| 25 | Vestrand et al., 1995ApJ...454L..93V |
| 26 | Catanese et al., 1997ApJ...480..562C |
| 27 | Bloom et al., 1997ApJ...490L.145B |