Elek G., Szabo E., “Hyperlinearity, essentially free actions and L–2–invariants. The sofic property”, Mathematische Annalen, 332:2 (2005), 421–441
Glebsky L.Y., Gordon E.I., “On approximation of topological groups by finite quasigroups and finite semigroups”, Illinois Journal of Mathematics, 49:1 (2005), 1–16
Glebsky, LY, “On approximation of locally compact groups by finite algebraic systems”, Electronic Research Announcements of the American Mathematical Society, 10 (2004), 21
Gordon E.I., Rezvova O.A., “On hyperfinite approximations of the field R”, Reuniting the Antipodes - Constructive and Nonstandard Views of the Continuum, Synthese Library - Studies in Epistemology, Logic, Methodology, and Philosophy of Science, 306, 2001, 93–102
Albeverio S., Gordon E.I., Khrennikov A.Y., “Finite–dimensional approximations of operators in the Hilbert spaces of functions on locally compact Abelian groups”, Acta Applicandae Mathematicae, 64:1 (2000), 33–73
A. G. Kusraev, S. S. Kutateladze, “Unsolved nonstandard problems”, Владикавк. матем. журн., 2:2 (2000), 26–45