P. Walden, Ber. 28,1287, 2766 (1895).
P. Walden, Ber. 29, 133 (1896); 30, 2795, 3146 (1897); 32,1833, 1855 (1899)
E. Fischer, Ber. 39, 2894 (1906)
F. D. Chway and S. Smiles, Ann. Repts. 8, 60 (1911)
P. Walden, Optische UmkehrerscheinlJngen (Braunschweig, 1919)
T. Wagner-E Jauregg in K. Freudenberg, Stereochemie, p 883 (Leipzig, 1933)
W Huckel, Theoretical Principles of Organic Chet P 495 (New York, 1955)
C. W. Shoppee et al-, J. Chem. Soc. 1955, 6i9, 686, 690, 1375, 1891; 1956, 1649, 1893, 2488,4821, 1957, 97
L. F. Fieser and M. Fieser, Advanced Organic Chemistry, pp 91, 153, 160, 320 (New York,1961).