Renato Fernandes Hentschke Guilherme Flach Felipe Pinto Ricardo Reis 3D-Vias Aware Quadratic Placement for 3D VLSI Circuits. 67-72 2007 conf/isvlsi/2007 ISVLSI http://doi.ieeecomputersociety.org/10.1109/ISVLSI.2007.1 db/conf/isvlsi/isvlsi2007.html#HentschkeFPR07