@article{Pa77, <br>AUTHOR = {Paul, W.J.},<br>TITLE = {A 2.5 N-lower Bound on the Combinational Complexity of Boolean Functions},<br>VOLUME = {6}, <br>YEAR = {1977},<br>PAGES = {427--443}, <br>URL = {http:///publikationen/Pa77.pdf}, <br>SERIES = {SIAM J. Comp.},<br>EE = {http://dx.doi.org/10.1137/0206030},<br>}