@article{10_4064_cm137_2_2,
     author = {Francesco de Giovanni and Federica Saccomanno},
     title = {A note on groups of infinite rank
 whose proper subgroups are abelian-by-finite},
     journal = {Colloquium Mathematicum},
     pages = {165--170},
     publisher = {mathdoc},
     volume = {137},
     number = {2},
     year = {2014},
     doi = {10.4064/cm137-2-2},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm137-2-2/}
}