@article{10_4171_ggd_427,
     author = {Holger Kammeyer},
     title = {Approximating {Novikov{\textendash}Shubin} numbers of virtually cyclic coverings},
     journal = {Groups, geometry, and dynamics},
     pages = {1231--1251},
     year = {2017},
     volume = {11},
     number = {4},
     doi = {10.4171/ggd/427},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/ggd/427/}
}