Computational Geometry Column 39
<|reference_start|>Computational Geometry Column 39: The resolution of a decades-old open problem is described: polygonal chains cannot lock in the plane.<|reference_end|>
@article{o'rourke2000computational,
    title={Computational Geometry Column 39},
    author={Joseph O'Rourke},
    journal={SIGACT News 31(3): 47-49 (2000)},
    year={2000},
    archivePrefix={arXiv},
    eprint={cs/0007042},
    primaryClass={cs.CG cs.DM}
}