author = { Beethoven, Ludwig van AND Berman, Lazarʹ N. },

title = { Sonaty No. 18 i No. 23 dlja fortepiano = Piano sonatas No. 18, 23 },

publisher = {Melodija},

keywords = { Schallplatte },

year = {[ca. 1979]},

abstract = {Sonata No. 18 dlja fortepiano, mi bemolʹ mažor, soč. 31, No. 3},

abstract = {Sonata No. 23 dlja fortepiano, fa minor, soč. 57 "Appassionata"},

address = { Moskva },

url = { http://slubdd.de/katalog?TN_libero_mab2 }