MathSciNet bibliographic data MR2411031 (2009e:05170) 05C40 (05C85 68Q15 68Q25) Trifonov, Vladimir An \$O(\log n\log\log n)\$$O(\log n\log\log n)$ space algorithm for undirected \$st\$$st$-connectivity. SIAM J. Comput. 38 (2008), no. 2, 449–483. Article

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