@article{CMH_1989__64_1_140154,
     author = {K.-H. Dovermann and M. Masuda},
     title = {Rigid versus non-rigid cyclic actions.},
     journal = {Commentarii mathematici Helvetici},
     pages = {269--287},
     year = {1989},
     volume = {64},
     number = {1},
     zbl = {0694.57025},
     url = {http://geodesic.mathdoc.fr/item/CMH_1989__64_1_140154/}
}