MS U.Munari, A.Siviero, P.Valisa, S.Dallaporta, G.Cherini, P.Ochner, F.Castellani, L.Buzzi, M.Brienza, V.Luppi, CBET No.1431, 2008.
H K.Hornoch, IAU Circ. No.8928, 2008.
Nak,Ito: K.Nakajima, H.Itoh (VSNET).
KOC,L,RU,SM: MEDUZA database.
SO: UBVRc photometry by V.P.Goranskij and E.A.Barsukova with CCD EEV 42-40 and SAO 1 m telescope.
Me: UBV photometry by N.V.Metlova using SAI Crimean Station 60-cm telescope and photoelectric photometer by V.M.Lyuty.
c7: VRc photometry by V.P.Goranskij with CCD SBIG ST-7 and CrAO 38cm telescope.
47: BVRc photometry by V.P.Goranskij and A.V.Zharova with CCD Apogee-47p and SAI Crimean station 60 cm telescope.
6m: UBVRc photometry with the 6 m telescope and the SCORPIO camera.
A5: BVRc photometry by V.P.Goranskij using SAI Crimean Station 50-cm Maksutov meniscus telescope and CCD Apogee Alta U8300.