Frenkel, Alexander, ‘Chapter 8 Did Mikhail Epelbaum Study at Warsaw Conservatoire?: the Early Years of An Eminent Yiddish Singer’, in Three Cities of Yiddish: St Petersburg, Warsaw and Moscow, ed. by Gennady Estraikh and Mikhail Krutikov, Studies In Yiddish, 15 (Cambridge: Legenda, 2017), pp. 104–23