The following paper has been published in an SCI-indexed journal (Journal of Biomedical Optics)
Han-Jeong Hwang, Jeong-Hwan Lim, Do-Won Kim, and Chang-Hwan Im, "Evaluation of Various Mental Task Combinations for Near-Infrared Spectroscopy-based Brain-Computer Interfaces," Journal of Biomedical Optics, vol. 19, no. 7, art. ID. 077005, 2014.