COLLATZ / MEINARDUS / WETTERLING, Differential-Difference Equations/Differential-Differenzengleichungen : Applications and Numerical Problems/Anwendungen und numerische Probleme. Softcover reprint of the original 1st ed. 1983. (International Series of Numerical Mathematics) 196 pp. (Springer Basel, SZ) ＜M25-18539＞