@article{10_4153_CMB_1999_044_4,
     author = {Nurmela, Kari J. and \"Osterg\r{a}rd, Patric R. J. and Spring, Rainer aus dem},
     title = {Asymptotic {Behavior} of {Optimal} {Circle} {Packings} in a {Square}},
     journal = {Canadian mathematical bulletin},
     pages = {380--385},
     year = {1999},
     volume = {42},
     number = {3},
     doi = {10.4153/CMB-1999-044-4},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1999-044-4/}
}