Alex Brodsky. An impossibility gap between width-4 and width-5 permutation branching programs. Inf. Process. Lett., 94(4):159-164, 2005. [doi]
@article{Brodsky05,
title = {An impossibility gap between width-4 and width-5 permutation branching programs},
author = {Alex Brodsky},
year = {2005},
doi = {10.1016/j.ipl.2005.01.012},
url = {http://dx.doi.org/10.1016/j.ipl.2005.01.012},
researchr = {https://researchr.org/publication/Brodsky05},
cites = {0},
citedby = {0},
journal = {Inf. Process. Lett.},
volume = {94},
number = {4},
pages = {159-164},
}