1. P.S. Theocaris, International Journal of Mechanical Sciences 14 (1972) 79?94.
2. N.I. Muskhelishvili, Some Basic Problems of the Mathematical Theory of Elasticity, 2nd English edition, P. Noordhoff, Groningen (1963).
3. J.E. McCune, The Physics of Fluids 9 (1966) 2082?2084.
4. L.F. Abd-Elall, L.M. Delves, and J.K. Reid, in Numerical Methods for Nonlinear Algebraic Equations, Gordon and Breach, London (1970) 47?59.
5. N.I. Ioakimidis, Zeitschrift für Angewandte Mathematick und Physik (to appear).