Wit Forys, Tomasz Krawczyk, James A. Anderson. Semiretracts--a counterexample and some results. Theoretical Computer Science, 307(1):117-127, 2003. [doi]
@article{ForysKA03,
title = {Semiretracts--a counterexample and some results},
author = {Wit Forys and Tomasz Krawczyk and James A. Anderson},
year = {2003},
doi = {10.1016/S0304-3975(03)00096-3},
url = {http://dx.doi.org/10.1016/S0304-3975(03)00096-3},
researchr = {https://researchr.org/publication/ForysKA03},
cites = {0},
citedby = {0},
journal = {Theoretical Computer Science},
volume = {307},
number = {1},
pages = {117-127},
}