Hackbusch, W. On the feedback vertex set problem for a planar graph. (English) Zbl 0870.05067 Computing 58, No. 2, 129-155 (1997). Reviewer: W.-K.Chen (Chicago) MSC: 05C85 05C20 05C38 68R10 PDFBibTeX XMLCite \textit{W. Hackbusch}, Computing 58, No. 2, 129--155 (1997; Zbl 0870.05067) Full Text: DOI
Müller, Rudolf On the partial order polytope of a digraph. (English) Zbl 0848.90105 Math. Program. 73, No. 1 (A), 31-49 (1996). MSC: 90C27 90C35 52B12 PDFBibTeX XMLCite \textit{R. Müller}, Math. Program. 73, No. 1 (A), 31--49 (1996; Zbl 0848.90105) Full Text: DOI
Nutov, Zeev; Penn, Michal On the integral dicycle packings and covers and the linear ordering polytope. (English) Zbl 0826.05047 Discrete Appl. Math. 60, No. 1-3, 293-309 (1995). Reviewer: J.W.Moon (Edmonton) MSC: 05C70 05C20 90C05 52B12 68R10 PDFBibTeX XMLCite \textit{Z. Nutov} and \textit{M. Penn}, Discrete Appl. Math. 60, No. 1--3, 293--309 (1995; Zbl 0826.05047) Full Text: DOI