Authors:
CLARK JS
TARASOV AE
STEELE IA
COE MJ
ROCHE P
SHRADER C
BUCKLEY DAH
LARIONOV V
LARIONOVA L
LYUTY VM
ZAITSEVA GV
GRUNSFELD J
FABREGAT J
PARISE R
Citation: Js. Clark et al., LONG-TERM VARIABILITY OF THE BE X-RAY BINARY A-0535+26 - I - OPTICAL AND UV SPECTROSCOPY/, Monthly Notices of the Royal Astronomical Society, 294(1), 1998, pp. 165-176
Citation: Va. Kotov et al., RAPID VARIABILITY OF ACTIVE GALACTIC NUCLEI - THE 160MIN PERIODICITY IN NGC-3516, NGC-4151 AND QUASAR 3C-273, Astronomische Nachrichten, 315(5), 1994, pp. 333-342