1 2 Pettie, Seth; Ramachandran, Vijaya (January 2002), "An optimal minimum spanning tree algorithm" (PDF), Journal of the ACM, 49 (1): 16–34, CiteSeerX 10.1.1.110.7670, doi:10.1145/505241.505243, MR 2148431, S2CID 5362916. ↑ Tarjan, Robert Endre (1983), "Chapter 6.