Celebratio Mathematica

Wolfgang Haken

Wolfgang Haken and the Four-Color Problem

Works connected to Lynn Arthur Steen

Filter the Bibliography List

clear

K. Ap­pel and W. Haken: “The four-col­or prob­lem,” pp. 153–​180 in Math­em­at­ics today: Twelve in­form­al es­says. Edi­ted by L. A. Steen. Spring­er (Ber­lin), 1978. incollection