Abstract
The aim of this short note is to improve some recent results of B. Grünbaum by some remarks. We use Grünbaum's notations.
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Reference
B. Grünbaum,Acyclic colorings of planar graphs, Israel J. Math.14 (1973), 390–408.
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Wegner, G. Note on a paper of B. Grünbaum on acyclic colorings. Israel J. Math. 14, 409–412 (1973). https://doi.org/10.1007/BF02764717
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DOI: https://doi.org/10.1007/BF02764717