@article{HHA_2011_13_2_a10,
     author = {Serge Yagunov},
     title = {Remark on rigidity over several fields},
     journal = {Homology, homotopy, and applications},
     pages = {159--164},
     publisher = {mathdoc},
     volume = {13},
     number = {2},
     year = {2011},
     doi = {10.4310/HHA.2011.v13.n2.a10},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4310/HHA.2011.v13.n2.a10/}
}