We present a contribution to the study of the dissaggregated. economic
long-wave model introduced by Kampmann et al. (1993) and Haxholdt et
al. (1994). This model includes two capital producing sectors that sep
arately develop a self-sustained cyclical motion. However, just one cy
clical mode is observed because of the interaction between sectors. Ou
r work concerns the analytical study of this model in two specially re
levant situations. Results obtained by simulations,in other works are
verified. (C) 1997 by John Wiley & Sons, Ltd.