Partial choice functions for families of finite sets. Hall, E. & Shelah, S. Fundamenta Mathematicae, 220:207–216, 2013. arxiv:0808.0535
bibtex   
@article{HalSh:934,
author = {Hall, Eric and Shelah, Saharon},
trueauthor = {Hall, Eric and Shelah, Saharon},
fromwhere = {1,IL},
journal = {Fundamenta Mathematicae},
note = { arxiv:0808.0535 },
pages = {207--216},
title = {{Partial choice functions for families of finite sets}},
volume = {220},
year = {2013},
}

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