2 citations to https://www.mathnet.ru/rus/im2395

1. M. Manzaroli, “Real algebraic curves of bidegree $(5,5)$ on the quadric ellipsoid”, Алгебра и анализ, 32:2 (2020), 107–142  ; St. Petersburg Math. J., 32:2 (2021), 279–306      
2. Degtyarev A., Itenberg I., Kharlamov V., “Real Enriques surfaces”, Real Enriques Surfaces, Lecture Notes in Mathematics, 1746, 2000, VII–+