1. Aleksandrov, A. D. 1936, O beskonechno malyh izgibaniyah neregulyarnyh poverhnostei, Matem. sbornik, 1(43), pp. 307-321;
2. Alexandrov, V. 2010, New manifestations of the Darboux's rotation and translation fields of a surface, New Zealand Journal of Mathematics, 40, pp. 59-65;
3. Belova, O., Mikeš, J., & Sherkuziyev, M. 2021, An Analytical Inflexibility of Surfaces Attached Along a Curve to a Surface Regarding a Point and Plane, Results Math, 76(56). doi:10.1007/s00025-021-01362-0;
4. Efimov, N. 1948, Kachestvennye voprosy teorii deformacii poverhnostei, UMN. 3. 2, pp. 47-158;
5. Gözütok, U., ˛ Coban, H. A., & Sa˘giro˘glu, Y. 2020, Ruled surfaces obtained by bending of curves, Turk J Math, 44, pp. 300-306. doi:10.3906/mat-1908-21;