<Knâz' Igor'> (Prince Igor)

<Knâz' Igor'> (Prince Igor)

Annals of opera, 1597–1940

<Knâz' Igor'> (Prince Igor)

Dictionnaire des œuvres de l'art vocal

A. Lischke

<Knâz' Igor'> (Prince Igor)

Opernlexikon/Opera catalogue/Lexique des opéras/Dizionario operistico

<Knâz' Igor'> (Prince Igor)

The Paris Opéra: An encyclopedia of operas, ballets, composers, and performers