Ewald Speckenmeyer. Untersuchungen zum Feedback-vertex-set-Problem in ungerichteten Graphen. PhD thesis, University of Paderborn, Germany, 1983. [doi]
@phdthesis{dnb-7353, title = {Untersuchungen zum Feedback-vertex-set-Problem in ungerichteten Graphen}, author = {Ewald Speckenmeyer}, year = {1983}, url = {http://d-nb.info/831085894}, researchr = {https://researchr.org/publication/dnb-7353}, cites = {0}, citedby = {0}, school = {University of Paderborn, Germany}, }