@article{10_4171_ggd_320,
     author = {Steffen Kionke and Joachim Schwermer},
     title = {On the growth of the first {Betti} number of arithmetic hyperbolic 3-manifolds},
     journal = {Groups, geometry, and dynamics},
     pages = {531--565},
     year = {2015},
     volume = {9},
     number = {2},
     doi = {10.4171/ggd/320},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/ggd/320/}
}