1. J. Furukawa and T. Saegusa, Polymerization ofAldehydes and Oxides, Interscience, Wiley, New York, 1963;S. Penczek and P. Kubisa, “Cationic Ring Opening Polymerization: Ethers” Chapé 48 in “Comprehensive Polymer Science”, Vol. 3, (G.C. Eastmond, A Ledwith, S. Russo, and P. Sigwalt, eds.), Pergamon Press, London, 1989
2. RD. Colclough, G. Gee, W.C.E. Higginson, J.B. Jackson, and M. Litt,J. Polymer Sci., 34,171 (1959)
3. A.M. Eastharn, Fortschr. Hochpolymer. -Forsch., 2, 18 (1960)
4. D.J. Worsford and A. M. Eastham, J. Am. Chem. Soc., 79, 897 (1957)
5. G.T. Merall, G.A. Latremouille, and A.M. Eastharn, J. Am. Chem. Soc., 82, 120 (1960)