Pavel Pudlák. A nonlinear bound on the number of wires in bounded depth circuits. Electronic Colloquium on Computational Complexity (ECCC), (122), 2005. [doi]
@article{ECCC-TR05-122, title = {A nonlinear bound on the number of wires in bounded depth circuits}, author = {Pavel Pudlák}, year = {2005}, url = {http://eccc.hpi-web.de/eccc-reports/2005/TR05-122/index.html}, researchr = {https://researchr.org/publication/ECCC-TR05-122}, cites = {0}, citedby = {0}, journal = {Electronic Colloquium on Computational Complexity (ECCC)}, number = {122}, }