TY - BOOK AU - NATO advanced study institute on geometric methods in systems theory (London) ED - NATO advanced study institute on geometric methods in systems theory (London) TI - Proceedings edited by D Q Mayne and R W Brockett T2 - Nato advanced study institutes series U1 - X:89M(B)p1,N73, L3 PY - 1973/// CY - Dordrecht PB - D Reidel KW - ECONOMICS ER -