Author,Title,Edition,Publisher,Year,Series,Number,ISBN,ISSN,URL
"Lossewa, Olga and Appel, Bernhard R.",Die Russlandreise Clara und Robert Schumanns (1844),,Schott,2004,Schumann Forschungen,,379570507X,,https://cir.nii.ac.jp/crid/1130000797714063744