Keita Tani, Hiromi Seo, Migiwa Maeda, Kazuko Imagawa, Nagatoshi Nishiwaki, Masahiro Ariga, Yasuo Tohda, Hiroyuki Higuchi, Hiro Kuma,
Synthesis and properties of tetrakisbridged parallel- and cross-orientation biphenylophanes Tetrahedron Letters. ,vol. 36, pp. 1883- 1886 ,(1995) ,
10.1016/0040-4039(95)00174-B