So far ,most of the existing dynamic input-output models have been time-invariant, hence incapable of depicting technical progress because of constant system plant matris; and a few time-variant models are not practical because of their awkwardne
Deng Sanrui Bai Mingli . , {{custom_author.name_en}}.
A Dynamic Input-Output Model with Time Delay and Evolutionary Structure. Systems Engineering - Theory & Practice, 1991, 11(5): 0-0 https://doi.org/10.12011/1000-6788(1991)5-107750