Yen DH, Chi PHQ. The impact of carbon footprint labels and QR code traceability on consumers’ willingness to pay: Evidence from a discrete choice experiment in urban Vietnam. IJEP [Internet]. 2025 Nov. 4 [cited 2025 Nov. 4];19(11):1-20. Available from: http://ijeponline.org/index.php/journal/article/view/1204