2 citations to https://www.mathnet.ru/eng/vsgu527

1. S. V. Pikulin, “Traveling-wave solutions of the Kolmogorov–Petrovskii–Piskunov equation”, Comput. Math. Math. Phys., 58:2 (2018), 230–237          
2. S. V. Pikulin, “The behavior of solutions to a special Abel equation of the second kind near a nodal singular point”, Comput. Math. Math. Phys., 58:12 (2018), 1948–1966