?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Nguyen%2C+The+Hoang+Anh&rft.aulast=Nguyen&rft.aufirst=The+Hoang+Anh&rft.date=2019&rft.title=A+Stacking+Ensemble+Learning+Model+for+Mental+State+Recognition+towards+Implementation+of+Brain+Computer+Interface&rft.genre=proceeding