K. Thongkham, P. Meepianc, P. Sukkha, P. Bunmark, P. Naranram, and R. Phongpharnich, “Consumer willingness to pay for Chaiya organic salted egg in smart label packaging: the case study in Surat Thani province”, BMEE, vol. 22, no. 1, pp. 1–16, Feb. 2024.