I. A. Borovikov, “Properties of Modules Over Clifford Algebras and Variational Problems”, J Math Sci, 2013
I. A. Borovikov, “Normally resolvable operators and direct decompositions of Sobolev spaces”, J Math Sci, 186:2 (2012), 153
Dubinskii J.A., “Complex Neumann type boundary problem and decomposition of Lebesgue spaces”, Discrete and Continuous Dynamical Systems, 10:1–2 (2004), 201–210
Witte, J, “A reflection principle and an orthogonal decomposition concernig hypoelliptic equations”, Mathematische Nachrichten, 237 (2002), 169
Jörg Witte, “A Reflection Principle and an Orthogonal Decomposition Concernig Hypoelliptic Equations”, Math. Nachr., 237:1 (2002), 169
Ю. А. Дубинский, А. С. Осипенко, “Нелинейные аналитические и коаналитические задачи
($L_p$-теория, клиффордов анализ, примеры)”, Матем. сб., 191:1 (2000), 65–102; Yu. A. Dubinskii, A. S. Osipenko, “Non-linear analytic and coanalytic problems ($L_p$-theory, Clifford analysis, examples)”, Sb. Math., 191:1 (2000), 61–95
Dubinskii J., “The general form of arbitrary linear functionals on the analytic Sobolev spaces”, PROCEEDINGS OF THE SECOND ISAAC CONGRESS, 7, 2000, 1345–1353
Dubinskii, YA, “On the “orthogonal” decomposition of Sobolev spaces into sum of the analytic and coanalytic subspaces”, Doklady Akademii Nauk, 359:6 (1998), 735