@article{10_37236_2816,
     author = {Paul Horn and Gabor Lippner},
     title = {Two layer {3D} floor planning},
     journal = {The electronic journal of combinatorics},
     year = {2013},
     volume = {20},
     number = {4},
     doi = {10.37236/2816},
     zbl = {1295.05041},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/2816/}
}