Kapor Agnes;  Stájer Géza;  Frimpong-Manso Samuel;  Bernáth Gábor: 5-ar-p-Tolyl-6at,7t,8,9,10t,10at-hexahydro-11H,13H-7,10-methano[1,3]benzoxazino[2,3-b][1,3]benzoxazin-13-one.
  ACTA CRYSTALLOGRAPHICA SECTION C, 51.  pp. 131-134.  ISSN 0108-2701 (1995)