@article{CML_2013__5_1_73_0,
     author = {Jean-Philippe Pr\'eaux},
     title = {Group {Extensions} with {Infinite} {Conjugacy} {Classes}},
     journal = {Confluentes Mathematici},
     pages = {73--92},
     publisher = {Institut Camille Jordan},
     volume = {5},
     number = {1},
     year = {2013},
     doi = {10.5802/cml.3},
     mrnumber = {3143612},
     language = {en},
     url = {https://cml.centre-mersenne.org/articles/10.5802/cml.3/}
}