### Bibliography

#### Works connected to ~~Kiyoshi Itō~~

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On the principal eigenvalue of elliptic second order differential operators,” pp. 41–47 in Proceedings of the international symposium on stochastic differential equations (Kyoto, 1976). Edited by K. Itō. Wiley (New York), 1978. MR 536002 Zbl 0447.35030 inproceedings

: “Selected papers. Edited by S. R. S. Varadhan and D. W. Stroock. Springer (New York), 1987. With an introduction by the editors. MR 868862 Zbl 0621.01019 book

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