1. [1] Artigue (M.), Gautheron (V.), Isambert (E.).— Une notion non standard d’attracteurs : les fleuves. Mathématiques finitaires Analyse non standard (Diener, M. and Wallet, G. eds.), Tome 2, Publ. Math. Univ. Paris VII, p. 191-208 (1989).
2. [2] Benoît (E.), Callot (J.-L.), Diener (F.), Diener (M.) .— Chasse au canard, Collect. Math. 32, no. 1-4, p. 37-119 (1981).
3. [3] Benzaid (Z.), Lutz (D. A.) .— Asymptotic representation of solutions of perturbed systems of linear difference equations. Stud. Appl. Math. 77, no. 3, p. 195-221 (1987).
4. [4] Van den Berg (I. P.) .— On solutions of polynomial growth of ordinary differential equations J. Differential Equations, 81 (2), p. 368-402 (1989).
5. [5] Van den Berg (I. P.) .— Macroscopic rivers. In : Dynamic bifurcations (Benoît, E. ed.), Lect. N. Math. 1493, p. 190-209, Springer (1991).