1. B. Sutherland:a)Phys. Rev. A,4, 2019 (1971);
2. Exact ground-state wave-function for a one dimensional plasma, preprint ITP-SB-75-2 (to be published).
3. Higher Transcendental Functions, edited byA. Erdélyi, Vol.3, Chap. 13 (New-York, N. Y., 1955).
4. due toFrobenius andStickelberger:Journ. für Math., LXXXVIII, reported byE. T. Whittakek andG. N. Watson:A Course of Modern Analysis (Cambridge, 1927), p. 446.
5. C. Marchioro andE. Presutti:Lett. Nuovo Cimento,4, 488 (1970); Cornm.Math. Phys.,27, 146 (1972);29, 265 (1973);B. Sutherland:Journ. Math. Phys.,11, 3193 (1970);12, 246 (1971).