@article{10_37236_5056,
     author = {Joy Morris},
     title = {The {CI} problem for infinite groups},
     journal = {The electronic journal of combinatorics},
     year = {2016},
     volume = {23},
     number = {4},
     doi = {10.37236/5056},
     zbl = {1353.05060},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/5056/}
}