Stability of mappings with bounded distortion in the Sobolev norm on the John domains of Heisenberg groups. Isangulova, D.V. — 2009 Sibirskij Matematicheskij Zhurnal
The class of mappings with bounded specific oscillation, and integrability of mappings with bounded distortion on Carnot groups. Isangulova, D.V. — 2007 Sibirskij Matematicheskij Zhurnal
Local stability of mappings with bounded distortion on Heisenberg groups. Isangulova, D.V. — 2007 Sibirskij Matematicheskij Zhurnal
Differentiability of the mappings of Carnot-Carathéodory spaces in the Sobolev and B V -topologies. Vodop'yanov, S.K.; Isangulova, D.V. — 2007 Sibirskij Matematicheskij Zhurnal