Lyapunov Sergey Mikhaylovich
WQXR radio's Classical Music Scene entry from the Grove Concise Dictionary of Music. Includes brief biography, major musical themes, and related composers.
Sergei Lyapunov
Article by David Wright for MusicWeb (UK) with detailed biography and comments on various symphonies, concerti, and other piano and orchestral works.
Sergei Mikhailovich Lyapunov (1859-1924)
Brief biographical sketch, comments on influences, and Naxos discography.