Snark (graph theory)
1886.0002, S2CID 108716533 Blanuša, Danilo (1946), "Le problème
des
quatre
couleurs
", Glasnik Matematičko-Fizički i Astronomski, Ser. II, 1: 31–42, MR 0026310...
23 KB (2,707 words) - 07:38, 22 July 2024