[1] Southwestern Univ Finance & Econ, Res Inst Econ & Management, Chengdu, Sichuan, Peoples R China
[2] Univ Surrey, Dept Econ, SEEC, Guildford GU2 5XH, Surrey, England
[3] Sustainable Solut Greece, Athens, Greece
[4] Plymouth Marine Lab, Plymouth PL1 3DH, Devon, England