1. E. J. Klein, AIAA Paper 68, 386 (1968).
2. G. M. Zharkova, A. V. Dovgal, V. N. Kovrizhina and B. Yu. Zanin, "Flow visualization on a low aspect ratio wing by liquid crystal coatings", in 8th International Symposium on Flow Visualization, Proceedings, edited by G. M. Carlomagno and I. Grant (Sorrento, 1998).
3. A.V. Dovgal, G. M. Zharkova, B. Yu. Zanin and V.N. Kovrizhina, Sci. Ann. of TsAGI 32(3-4), 157–163 (2001).
4. G. M. Zharkova, A.V. Dovgal, V.N. Kovrizhina and B.Yu. Zanin, "Investigation of flow separation on a finite span wing by liquid crystal coatings," in The Millenium 9th International Symposium on Flow Visualization, Proceedings, edited by G.M. Carlomagno and I. Grant (Edinburgh, 2000), p. 331.
5. G. M. Zharkova, B. Yu. Zanin, V. N. Kovrizhina, O. S. Sboev, Ustoichivost techenii gomogennych i geterogennych zidkostey 8, 67–68 (2001).