Before revision:  Alongside common methods in time-series analysis of coupling between financial and economic markets, mapping coupled time-series onto networks is an outstanding measure to provide insight into hidden aspects embedded in couplings intrinsically.
After revision:  Alongside common methods in time-series analysis of coupling between financial and economic markets, mapping the joint structure of two time-series onto networks is an outstanding measure to provide insight into hidden aspects embedded in couplings intrinsically.