The European Bibliography of Slavic and East European Studies (EBSEES) - 1991-2007

The European Bibliography of Slavic and East European Studies (EBSEES) collects books, journal articles, reviews and dissertations from Eastern Europe (former countries of Eastern Bloc) which were published in Belgium, Germany, Finland, France, Great Britain, the Netherlands, Austria and Switzerland from 1991 to 2007. The segment "Literature" and "Culture" of the European Bibliography of Slavic and East European Studies contains 18.000 bibliographic entries (from the total asset of 85.000). More information can be found here.

Your search for Kaznina, Ol'ga provides 2 hits
1	Russkie v Anglii: russkaja emigracija v kontekste russko-anglijskih literaturnyh svjazej v pervoj polovine XX veka (Russians in England: Russian emigration in the context of Anglo-Russian literary links in the first half of the twentieth century) Kaznina, Ol'ga, Moscow, Nasledie, 1997, 416 p
2	D.S. Mirsky to Maksim Gor'ky: sixteen letters (1928-1934) Kaznina, Ol'ga; Smith, G.S., in: Oxford Slavonic Papers, ns 26, 1993, p. 87-103

The European Bibliography of Slavic and East European Studies (EBSEES) - 1991-2007

Russkie v Anglii: russkaja emigracija v kontekste russko-anglijskih literaturnyh svjazej v pervoj polovine XX veka (Russians in England: Russian emigration in the context of Anglo-Russian literary links in the first half of the twentieth century)

D.S. Mirsky to Maksim Gor'ky: sixteen letters (1928-1934)