Cram, Donald J.; Elhafez, Fathy Ahmed Abd (1952). "Studies in Stereochemistry. X. The Rule of "Steric Control of Asymmetric Induction" in the Syntheses of Acyclic Systems". Journal of the American Chemical Society. 74 (23): 5828–5835. Bibcode:1952JAChS..74.5828C. doi:10.1021/ja01143a007.
Cram, Donald J.; Elhafez, Fathy Ahmed Abd (1952). "Studies in Stereochemistry. X. The Rule of "Steric Control of Asymmetric Induction" in the Syntheses of Acyclic Systems". Journal of the American Chemical Society. 74 (23): 5828–5835. Bibcode:1952JAChS..74.5828C. doi:10.1021/ja01143a007.