Non-separable and planar graphs.
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Publication:5893500
DOI10.1073/PNAS.17.2.125zbMath57.0727.05OpenAlexW1994637765WikidataQ33738434 ScholiaQ33738434MaRDI QIDQ5893500
No author found.
Publication date: 1931
Published in: Proceedings of the National Academy of Sciences of the United States of America (Search for Journal in Brave)
Full work available at URL: https://doi.org/10.1073/pnas.17.2.125
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