Yagunov, Serge Max Planck Institute for Mathematics, Max Planck Society;
https://elibm.org/article/10000599 (Publisher version)
Yagunov_Rigidity II_non-orientable case_2004.pdf (Publisher version), 187KB
Yagunov, S. (2004). Rigidity II: non-orientable case. Documenta Mathematica, 9, 29-40.