Wongkalasin, K., T. Upachaban, W. Daosawang, N. Pannucharoenwong, and P. Ratanadecho. “Watermelon Sorting Process by Frequency Identification and Artificial Neural Network”. Applied Science and Engineering Progress, vol. 16, no. 1, Nov. 2022, p. 5630, doi:10.14416/j.asep.2021.12.004.