6SARAGIH B,SUNITO S.Lake Toba:Need for an Integrated Management System[J].Lakes & Reservoirs:Research &Management,2001,6 (3):247-251.
7FRISVOLD G B,CASWELL M F.Transboundary Water Management:Game-theoretic lessens for Projects on the US-Mexico border[J].Agricultural Economics,2000,24(1):101-111.