R. Nararatwong, N. Kertkeidkachorn, and R. Ichise. 2020 IEEE Third International Conference on Artificial Intelligence and Knowledge Engineering (AIKE), page 174-178. (December 2020)
M. Gärtner, U. Hahn, and S. Hermann. Proceedings of the Eleventh International Conference on Language Resources and Evaluation (LREC 2018), page 563--570. Paris, France, European Language Resources Association (ELRA), (May 2018)