Chimani, Markus; Kandyba, Maria; Ljubić, Ivana; Mutzel, Petra Obtaining optimal \(k\)-cardinality trees fast. (English) Zbl 1284.68660 ACM J. Exp. Algorithm. 14, Spec. Iss. 1, Article No. 2.5, 23 p. (2009). MSC: 68W25 90C27 05C85 05C05 68T20 68Q25 PDFBibTeX XMLCite \textit{M. Chimani} et al., ACM J. Exp. Algorithm. 14, Article No. 2.5, 23 p. (2009; Zbl 1284.68660) Full Text: DOI
Varecza, Árpád Remarks on a problem of G. O. H. Katona. (English) Zbl 0579.05014 Bull. Appl. Math. 34, No. 258, 155-167 (1984). MSC: 05A99 PDFBibTeX XMLCite \textit{Á. Varecza}, Bull. Appl. Math. 34, No. 258, 155--167 (1984; Zbl 0579.05014)