@article{TSG_2002-2003__21__75_0,
     author = {Bergeron, Nicolas},
     title = {Propri\'et\'es de {Lefschetz} dans la cohomologie de certaines vari\'et\'es arithm\'etiques : le cas des surfaces modulaires de {Hilbert}},
     journal = {S\'eminaire de th\'eorie spectrale et g\'eom\'etrie},
     pages = {75--101},
     publisher = {Institut Fourier},
     address = {Grenoble},
     volume = {21},
     year = {2002-2003},
     mrnumber = {2052826},
     zbl = {1053.11047},
     language = {fr},
     url = {http://www.numdam.org/item/TSG_2002-2003__21__75_0/}
}