sentences:  From 1867 to 1901, Epstein was a professor of piano at the Vienna Conservatory, where Ignaz Brüll, Marcella Sembrich, Mathilde Kralik, Gustav Mahler, Benito Bersa and Richard Robert were among his pupils.Epstein edited Beethoven's piano sonatas, Mendelssohn's "Sämmtliche Klavierwerke" and Schubert's "Kritisch Durchgesehene Gesammtausgabe", among others.He died, aged 93, in Vienna.