Literature sources:

6m: A.F.Valeev with the Russian 6-m telescope and the SCORPIO spectroscopic camera.
A5: V.P.Goranskij with the 50 cm Maksutov meniscus telescope of the Moscow University Crimean Observational Station and the Apogee Alta U8300 BVRcIc CCD photometer. JD 2457242 - 2457262: B = B(A5)-0.15; V = V(A5)-1.72; Ic = Ic(A5)+0.28. After JD 2457594: B = B(A5)+1.10; V = V(A5)-0.80; Rc = Rc(A5)+1.03; Ic = Ic(A5)+1.04.
IA K.Imamura, H.Akazawa, H.Maehara, Astron. Telegram No.6128, 2014.
Me: N.V.Metlova with the 60 cm Zeiss telescope of the SAI Crimean Station and the Lyuty UBV photometer.
MC: U.Munari, G.Cetrulo, D.Degano, F.Castellani, CBET No.3842, 2014.
TS: T.Tomov, E.Swierczynski, D.Puchalski, D.Dimitrov, D.Chanliev, A.Kurtenkov, T.Bonev, D.Marchev, D.Kjurkchieva, Astron. Telegram No.6060, 2014.
SO: V.P.Goranskij with the 1 m Zeiss telescope of the Special Astrophysical Observatory and the UBVRcIc CCD photometer based on EEV 42-40 chip.
Vis: Mas-Masi; Wol-Wollman; Sch-Schmeer.