1. Anon., On Wolfe's universal algorithm, Thesis, to appear.
2. K.F. Gauss,Gesammelte Werke (Springer Verlag, Berlin 1933) (and other works by the same author).
3. N. Bourbaki,Eléments de mathématique (Hermann et Cie., Paris) p. 1 et seq.
4. Private Communication.