Meetings of the St. Petersburg mathematical society. (English. Russian original) Zbl 1175.00056 Russ. Math. Surv. 64, No. 3, 575-576 (2009). MSC: 00B05 Collections of abstracts of lectures PDFBibTeX XMLCite Russ. Math. Surv. 64, No. 3, 575--576 (2009; Zbl 1175.00056) Full Text: DOI