Weinberg, Linda R.; Albom, Mark S.; Angeles, Thelma S.; Husten, Jean; Lisko, Joseph G.; McHugh, Robert J.; Milkiewicz, Karen L.; Murthy, Seetha; Ott, Gregory R.; Theroff, Jay P.; Tripathy, Rabindranath; Underiner, Ted L.; Zificsak, Craig A.; Dorsey, Bruce D.
Bioorganic and Medicinal Chemistry Letters, 2011 , vol. 21, # 1 p. 164 - 167

Allergan
Patent: US5723666 A1, 1998 ;

Mathur, Naresh C.; Snow, Miles S.; Young, Kent M.; Pincock, James A.
Tetrahedron, 1985 , vol. 41, # 8 p. 1509 - 1516

Winstein,S.; Heck,R.F.
Journal of Organic Chemistry, 1972 , vol. 37, p. 825 - 836