Barton, Derek H. R.; Parekh, Shyamal I.; Tajbakhsh, Mahmoud; Theodorakis, Emmanouil A.; Tse, Chi-Lam
Tetrahedron, 1994 , vol. 50, # 3 p. 639 - 654

Guirado, Antonio; Zapata, Andres; Gomez, Jesus L.; Trabalon, Luis; Galvez, Jesus
Tetrahedron, 1999 , vol. 55, # 31 p. 9631 - 9640

Organic and Biomolecular Chemistry, , vol. 1, # 12 p. 2168 - 2172