@article{ADM_2017_23_2_a7,
     author = {Jang Hyun Jo and Jong Bum Lee and Sang Rae Lee},
     title = {The $R_{\infty}$ property for {Houghton's} groups},
     journal = {Algebra and discrete mathematics},
     pages = {249--262},
     publisher = {mathdoc},
     volume = {23},
     number = {2},
     year = {2017},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ADM_2017_23_2_a7/}
}