Riemann G. Systematic teachings on modulation as a basis for teaching about musical forms In Russian (ask us if in doubt)/Riman G. Sistematicheskoe uchenie o modulyatsii, kak osnova ucheniya o muzykal'nykh formakh Translation from German J. Engel M. -Leipzig P. Juergenson 1898. 243 p. SKUalb4398885afabe3f7a.