@article{AMC_2018__14_1_a2,
     author = {​ ​},
     title = {
		{Paper} has been retracted by the {Editors} in {Chief} with author{\textquoteright}s permission.
	},
     journal = {Ars Mathematica Contemporanea},
     pages = {15--23},
     publisher = {mathdoc},
     volume = {14},
     number = {1},
     year = {2018},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AMC_2018__14_1_a2/}
}