Sources:

DSS: Digitized Sky Survey;
AS: ASAS;
A7p/A47/C7/Cry/E/K/P/VA/6m: Our observations;
VRM: I.Voloshina, H.Rovithis-Livaniou, N.Metlova, in "Classical Nova Explosion", Ed. M.Hernanz, J.Jose, AIP Conf. Proc. V.637, 315, 2002;
Gso/Kis/Rod/OCN/Myy/Wnm/LLA: VSNET.