00375nam a2200133Ia 4500020001500000082002500015100002200040245005300062260003400115300002100149490006100170500000500231700000500236  a3540088474  a330.0151535bC521.SV  aCherene, Louis J.  aSet valued dynamical systems and economic flowb  aBerlinbSpringer-Verlagc1978  aviii, 83p. Index  aLecture notes in Economics and Mathematical systems, 158  a  a