置換グラフ
↑ Brandstädt, Le & Spinrad (1999), p.191.
↑ Brandstädt, Le & Spinrad (1999), Proposition 4.7.1, p.57.
↑ Dushnik, & Miller (1941).
↑ Baker, Fishburn & Roberts (1971).
↑ McConnell & Spinrad (1999)
↑ Golumbic (1980).
↑ Bodlaender, Kloks & Kratsch (1995)
↑ Spinrad, Brandstädt & Stewart (1987)