Enlace original:
http://repositorio.uchile.cl/handle/2250/126073
Lira Teillery, Paulina
,
Arévalo, P.
,
Uttley, P.
,
McHardy, I.
,
Breedt, E.
,
[Optical and near-IR long-term monitoring of NGC 3783 and MR 2251−178: evidence for variable near-IR emission from thin accretion discs]