@article{Pa76, <br>AUTHOR = {Paul, W.J.},<br>TITLE = {Realizing Boolean Functions on Disjoint Sets of Variables},<br>VOLUME = {2}, <br>YEAR = {1976},<br>PAGES = {383--396}, <br>SERIES = {Theoretical Computer Science 1976},<br>EE = {http://dx.doi.org/10.1016/0304-3975(76)90089-X},<br>}