Jünger, M. Polyhedral combinatorics and the acyclic subdigraph problem. (English) Zbl 0557.68045 Research and Exposition in Mathematics, 7. Berlin: Heldermann Verlag. x, 128 p. DM 36.00 (1985). Reviewer: Jan Karel Lenstra (Amsterdam) MSC: 90C57 90-02 05-02 68-02 05C20 51M20 68R10 PDFBibTeX XML
Las Vergnas, Michel Acyclic and totally cyclic orientations of combinatorial geometries. (English) Zbl 0404.05017 Discrete Math. 20(1977), 51-61 (1978). MSC: 05B35 05B25 05C99 05C20 51D20 PDFBibTeX XMLCite \textit{M. Las Vergnas}, Discrete Math. 20, 51--61 (1978; Zbl 0404.05017) Full Text: DOI