@article{10_4153_CJM_2011_063_6,
     author = {Lee, Jae-Hyouk},
     title = {Gosset {Polytopes} in {Picard} {Groups} of del {Pezzo} {Surfaces}},
     journal = {Canadian journal of mathematics},
     pages = {123--150},
     year = {2012},
     volume = {64},
     number = {1},
     doi = {10.4153/CJM-2011-063-6},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-2011-063-6/}
}