1. and , Padé Approximants, Part I: Basic Theory, Part II: Extensions and Applications, Addison-Wesley (1981).
2. (a) Part II, Chap. 1, Sec. 1.1.
3. (b) Part I, Chap. 1, Sec. 1.4.
4. (c) Part I, Chap. 1, Sec. 1.3, p. 16.
5. (d) Part II, Chap. 1, Sec. 1.1, p. 2.