1. The Synthesis of Sodium Ethylenesulfonate from Ethylene
2. D.C. England; US Pat. 24852 554 (1958) (Chem. Abstr., 1959, 53, 2253).
3. Sulfonation of Olefins. IX. Sulfonation of 1,1-Diphenylethene
4. Reactions of Fluoroölefins with Sulfur Trioxide
5. H.H. Gibbs and R.N. Griffith; US Pat. 3 041 317 (1960) (Chem. Abstr., 1960, 58, 451a).