@article{AMC_2011__4_2_a1,
     author = {Gems 2009},
     title = {
		{GEMS} 2009 {Pictures
}	},
     journal = {Ars mathematica contemporanea},
     year = {2011},
     volume = {4},
     number = {2},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AMC_2011__4_2_a1/}
}