http://www.britannica.com/eb/article?eu=32703&tocid=0 Britannica.com article follows his career, with emphasis on his operas, his blend of styles, and life issues that shaped his musical sensibilities. http://stevenestrella.com/composers/composerfiles/einemliving.html Biographical data, recommended CDs, books and sheet music, bibliography, and links to biographical essays from Dr. Estrella's Incredibly Abridged Dictionary of Composers. http://www.hnh.com/composer/einem.htm Biographical sketch with recommended Naxos recording. http://www.karadar.net/Dictionary/einem.html Musica Classica Classical Music Dictionary entry with life, important works, and photographs.