1. G. Akhalaia, G. Giorgadze, V. Jikia, N. Kaldani, N. Manjavidze, and G. Makatsaria, “Elliptic systems on Riemann surfaces,” Lect. Notes TICMI, 13, 1–147 (2012).
2. G. Giorgadze, “Geometric aspects of generalized analytic functions,” in: Topics in Analysis and its Applications, NATO Sci. Ser., 147 (2004), pp. 69–81.
3. G. Giorgadze and V. Jikia, “On some properties of generalized analytic functions induced from irregular Carleman–Bers–Vekua equations,” Complex Var. Ell. Equations, DOI: 10.1080/17476933.2011.644280 (2012).
4. I. N. Vekua, Generalized Analytic Functions [in Russian], Nauka (1988).