Liverpool-Maidanak monitoring of the Einstein Cross in 2006–2019 - I. Light curves in the gVrRI optical bands and microlensing signatures
L. J. Goicoechea, B. P. Artamonov, V. N. Shalyapin, A. V. Sergeyev, O. A. Burkhonov, T. A. Akhunov, I. M. Asfandiyarov, V. V. Bruevich, S. A. Ehgamberdiev, E. V. Shimanovskaya and A. P. Zheleznyak
