Igor Pak, Rom Pinchasi. Collapsing Walls Theorem. The American Mathematical Monthly, 119(2):156-160, 2012. [doi]
@article{PakP12,
title = {Collapsing Walls Theorem},
author = {Igor Pak and Rom Pinchasi},
year = {2012},
doi = {10.4169/amer.math.monthly.119.02.156},
url = {http://dx.doi.org/10.4169/amer.math.monthly.119.02.156},
researchr = {https://researchr.org/publication/PakP12},
cites = {0},
citedby = {0},
journal = {The American Mathematical Monthly},
volume = {119},
number = {2},
pages = {156-160},
}