Title: [8-(4-But-oxy-benzo-yl)-2,7-dimeth-oxy-naphthalen-1-yl](4-but-oxy-phen-yl)methanone.
Journal: Acta crystallographica. Section E, Structure reports online 20111201
Title: 2,4-Bis(4-but-oxy-phen-yl)-3-aza-bicyclo-[3.3.1]nonan-9-one.
Journal: Acta crystallographica. Section E, Structure reports online 20110301