Differential-difference equations : = Differential-differenzengleichungen : applications and numerical problems workshop in Oberwolfach, June 6-12, 1982 =: Anwendungen und numerische Probleme Tagung in Oberwolfach, 6-12 Juni 1982 - Collatz, L.; Meinardus, G.; Wetterling, W. (International series of numerical mathematics, 1983)