D. Sykes, G. Schmalz, V. V. Ezhov, “On the classification of $3$-dimensional spherical Sasakian manifolds”, Izv. RAN. Ser. Mat., 85:3 (2021), 191–202; Izv. Math., 85:3 (2021), 518–528
2008
2.
V. K. Beloshapka, V. V. Ezhov, G. Schmalz, “Holomorphic classification of four-dimensional surfaces in $\mathbb C^3$”, Izv. RAN. Ser. Mat., 72:3 (2008), 3–18; Izv. Math., 72:3 (2008), 413–427
V. K. Beloshapka, V. V. Ezhov, G. Schmalz, “Vitushkin's Germ Theorem for Engel-Type CR Manifolds”, Trudy Mat. Inst. Steklova, 253 (2006), 7–13; Proc. Steklov Inst. Math., 253 (2006), 1–7
Kang-Tae Kim, G. Schmalz, “Dynamics of Local Automorphisms of Embedded CR-Manifolds”, Mat. Zametki, 76:3 (2004), 477–480; Math. Notes, 76:3 (2004), 443–446
V. V. Ezhov, A. V. Loboda, G. Schmalz, “Canonical form of a fourth-degree polynomial in a normal equation of a real hypersurface in $\mathbb C^3$”, Mat. Zametki, 66:4 (1999), 624–626; Math. Notes, 66:4 (1999), 513–515
V. V. Ezhov, G. Schmalz, “A simple proof of the Beloshapka theorem on the parametrization of the automorphism group of a CR manifold”, Mat. Zametki, 61:6 (1997), 939–942; Math. Notes, 61:6 (1997), 783–786
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