Discussiones Mathematicae Graph Theory 29(2) (2009)
253-261
doi: 10.7151/dmgt.1445
Dariusz Dereniowski
Department of Algorithms and System Modeling
Gdańsk University of Technology, Poland
e-mail: deren@eti.pg.gda.pl
Keywords: computational complexity, vertex ranking, spanning tree.
2000 Mathematics Subject Classification: 68R10, 68Q25, 05C15.
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Received 3 December 2007
Revised 10 March 2009
Accepted 10 March 2009