1. Abramowitz, M., and I.A. Stegun (eds.): 1964, Handbook of Mathematical Functions, AMS 55, Natl. Bur. Stds., Washington.
2. Adu-Gyamfi, D.: 1986, ‘On the Gauge Invariance of Linear Response Theory’, J. Phys. A: Math. Gen. 19, 3443.
3. Ailawadi, N.K., B.J. Berne, and D. Forster: 1971, ‘Hydrodynamics and Collective Angular-Momentum Fluctuations in Molecular Fluids’, Phys. Rev. A3, 1462.
4. Currie, LG.: 1974, Fundamental Mechanics of Fluids, McGraw-Hill, New York.
5. Dufour, L.: 1873, Pogg. Ann. 148, 490.