@article{TM_1997_216_a18,
     author = {A. Katok and R. J. Spatzier},
     title = {Differential rigidity of {Anosov} actions of higher rank abelian groups and algebraic lattice actions},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {292--319},
     publisher = {mathdoc},
     volume = {216},
     year = {1997},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/TM_1997_216_a18/}
}