Alder et al.
Justus Liebigs Annalen der Chemie, 1954 , vol. 586, p. 110,125

Maekawa, Hirofumi; Yamamoto, Yoshimasa; Shimada, Hisashi; Yonemura, Kazuaki; Nishiguchi, Ikuzo
Tetrahedron Letters, 2004 , vol. 45, # 20 p. 3869 - 3872

Tsubo, Tatsuyuki; Chen, Hsiu-Hui; Yokomori, Minako; Fukui, Kosuke; Kikuchi, Satoshi; Yamada, Tohru
Chemistry Letters, 2012 , vol. 41, # 8 p. 780 - 782