Sohár Pál;  Stájer Géza;  Nagy Katalin;  Bernáth Gábor: Preparation and steric structure partially saturated isoindolo[1,3]- and -[3,1]benzoxazinones and -[2,4]benzoxazepinones.
  MAGNETIC RESONANCE IN CHEMISTRY, 33 (5).  pp. 329-336.  ISSN 0749-1581 (1995)