Volkmann, Lutz
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Tamkang Journal of Mathematics Vol. 52 No. 4 (2021) - Papers
Weak Signed Roman Domination in Digraphs
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Tamkang Journal of Mathematics Vol. 48 No. 3 (2017) - Papers
Twin signed Roman domatic numbers in digraphs
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Tamkang Journal of Mathematics Vol. 47 No. 3 (2016) - Papers
Twin signed Roman domination numbers in directed graphs
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Tamkang Journal of Mathematics Vol. 47 No. 4 (2016) - Papers
The Roman bondage number of a digraph
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Tamkang Journal of Mathematics Vol. 49 No. 2 (2018) - Papers
The restrained rainbow bondage number of a graph
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