Gao, Y., C. Xue, R. Wang, and X. Jiang. “Chinese Fingerspelling Recognition via Gray-Level Co-Occurrence Matrix and Fuzzy Support Vector Machine”. EAI Endorsed Transactions on E-Learning, vol. 7, no. 20, Oct. 2020, p. e1, doi:10.4108/eai.12-10-2020.166554.