1. Brezzi, F., Rappaz, T., Raviart, P.: Finite dimensional approximation of nonlinear problems. Part III. Simple bifurcation points, Numer. Math. 38, 1–30, 1981.
2. Beyn, W.-J.: A note on the Lyapunov-Schmidt reduction. Manuscript, Univ. of Konstanz, 1982.
3. Beyn, W.-J.: Defining equations for singular solutions and numerical applications, pp. 42–56 in [13].
4. Descloux, J., Rappaz, J.: Approximation of solution branches of nonlinear equations. R.A.I.R.O. Anal. Num. 16, 319–349, 1982.
5. Deuflhard, P., Fiedler, B., Kunkel, P.: Efficient numerical pathfollowing beyond critical points. Preprint no 278, Univ. of Heidelberg, SFB 123, 1984.