EBSEES: 3 hits for Tschaikowsky, see Čajkovskij

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 Tschaikowsky, see Čajkovskij provides 3 hits
1	Peter Iljitsch Tschaikowsky: 1840-1893; Leben, Werk und Wirkung München, Orbis-Verl., 1992, 95 p.
2	Evgenij Onegin: Puškins Versroman und Tschaikowskys Oper im Vergleich unter Berücksichtigung der Opernverfilmung von Petr Weigl Gerner-Edenhauser, Andrea, Salzburg, Univ., Dipl.-Arb., 1996, 118 p., Notenbeisp
3	Tschaikowsky - Strawinsky, Balanchine - Neumeier: Violin Concerto; Petruschka; Theme and variations Hamburg, Intendanz der . Staatsoper, 1995, 131 p., ill

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

Peter Iljitsch Tschaikowsky: 1840-1893; Leben, Werk und Wirkung

Evgenij Onegin: Puškins Versroman und Tschaikowskys Oper im Vergleich unter Berücksichtigung der Opernverfilmung von Petr Weigl

Tschaikowsky - Strawinsky, Balanchine - Neumeier: Violin Concerto; Petruschka; Theme and variations