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De Meijere, Armin; von Seebach, Malte; Zöllner, Stefan; Kozhushkov, Sergei I.; Belov, Vladimir N.; Boese, Roland; Haumann, Thomas; Benet-Buchholz, Jordi et al. (2001). "Spirocyclopropanated Bicyclopropylidenes: Straightforward Preparation, Physical Properties, and Chemical Transformations". Chemistry - A European Journal7 (18): 4021–4034. doi:10.1002/1521-3765(20010917)7:18<4021::AID-CHEM4021>3.0.CO;2-E. பப்மெட்:11596945.