1. G. Fraley, W. Gupta, D. Henderson, R. McCrory, R. Malone, R. Mason and R. Morse, in Proc Intern. Conf. on Plasma Physics and Controlled Nuclear Fusion Research. Tokyo, Japan, p. (1974).
2. D. H. Sharp, Physica 12D, p. 3, (1984).
3. H. W. Emmons, C. T. Chang and B. C. Watson, J. Fluid Mech. 7, p.177, (1960).
4. K. I. Read, Physica 12D, p. 45, (1984).
5. G. R. Baker, D. I. Meiron and S. A. Orszag, Phys. Fluids 23, p.1485, (1980).