@article{JEMS_2012_14_1_a7,
     author = {P\'eter P. Varj\'u},
     title = {Expansion in $SL_d(\mathcal{O}_K/I)$, $I$ square-free},
     journal = {Journal of the European Mathematical Society},
     pages = {273--305},
     publisher = {mathdoc},
     volume = {14},
     number = {1},
     year = {2012},
     doi = {10.4171/jems/302},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/jems/302/}
}