1. Foldy, L.L., Walecka, J.D.: Ann. Phys. (NY)54, 447 (1969)
2. Batty, C.J.: In: Proceedings of the 12th Int. Conf. on Few Body Problems in Physics. Vancouver 1989
3. Friedman, E., Gal, A., Batty, C.J.: Phys. Lett. B308, 6 (1993)
4. Gibbs, W.R., Gibson, B.F., Hess, A.T., Stephenson, G.J., Kaufmann, W.B.: Phys. Rev. C13, 2433 (1976)
5. Johnson, M.B., Bethe, H.A.: Nucl. Phys. A305, 418 (1978)