Sergei Agapov, Vladislav Shubin, “New examples of non-polynomial integrals of two-dimensional geodesic flows *”, J. Phys. A: Math. Theor., 57:1 (2024), 015204
Sergey I. Agafonov, Thaís G. P. Alves, “Fractional-linear integrals of geodesic flows on surfaces and Nakai's geodesic 4-webs”, Advances in Geometry, 24:2 (2024), 263
Sergei Agapov, Alexey Potashnikov, Vladislav Shubin, “Integrable magnetic geodesic flows on 2-surfaces *”, Nonlinearity, 36:4 (2023), 2128
С. В. Агапов, А. А. Валюженич, В. В. Шубин, “Некоторые замечания о полиномиальных интегралах высокой степени магнитного геодезического потока на двумерном торе”, Сиб. матем. журн., 62:4 (2021), 715–720 ; S. V. Agapov, A. A. Valyuzhenich, V. V. Shubin, “Some remarks on high degree polynomial integrals of the magnetic geodesic flow on the two-dimensional torus”, Siberian Math. J., 62:4 (2021), 581–585
S. Agapov, V. Shubin, “Rational integrals of 2-dimensional geodesic flows: new examples”, J. Geom. Phys., 170 (2021), 104389