@article{10_4153_CJM_2011_019_9,
     author = {Baake, Michael and Scharlau, Rudolf and Zeiner, Peter},
     title = {Similar {Sublattices} of {Planar} {Lattices}},
     journal = {Canadian journal of mathematics},
     pages = {1220--1237},
     year = {2011},
     volume = {63},
     number = {6},
     doi = {10.4153/CJM-2011-019-9},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-2011-019-9/}
}