求助，英文文献的DOI。

Schwepker, C.H.; Cornwell, T.B. An examination of ecologically concerned consumers and their intention to purchase ecologically packaged products. J. Public Policy Mark. 1991, 10, 77-101

Bei, L. T.; Simpson, E.M. The determinants of consumers' purchase decision for recycled products: An application of acquisition-transaction utility theory. Adv. Consum. Res. 1995, 22, 257-261

Ali, M.; Amir, M. Pro-environmental products: marketing influence on consumer purchase decision. Arab. J. Bus. Manage. Rev. 2016, 5, 1-15.