found: Rare masterpieces of Russian piano music, c1984:p. 107 (Pyotr Schlözer)
found: Biog. dict. of Russian/Soviet composers, c1989(Schloezer (Shloetzer, Shlyotser), Paul (Pavel (Pyotr) Yul'yevich (Avgustovich)); b. ca. 1841; d. 7-1-1898, Nauheim, Germany; pianist and composer; taught at the Warsaw Music Institute (1872-91), then at the Moscow Conservatory (1891-98))
found: OCLC, 6-24-95(hdg.: Schlözer, Paul de, 1841-1898; usage: Paul de Schlözer; Pyotr Schlözer)
found: OCLC #225650568, Mar. 30, 2010(hdg.: Schlözer, Paul de, 1841-1898; usage: P. Shlët︠s︡er)
found: Wikipedia, February 23, 2016(Paul de Schlözer; Paweł Schlözer; born 1840 or 1841; died 1898; Polish pianist and teacher of German descent; possibly also a composer, but the only two works attributed to him may have been written by Polish composer Moritz Moszkowski)
found: DNB in VIAF, February 23, 2016(Schlözer, Paul de, 1841-1898)
found: National Library of Poland in VIAF, February 23, 2016(Schlözer, Paweł, 1842-1898; variants: Schlözer, Paul de; Schloezer, Paul; Šlëcer, P.; Polish pianist, composer, and pedagogue)
notfound: New Grove;Baker, 8th ed.;Ėnt︠s︡. muz. slovar, 1966.