The following paper has been published in an SCI indexed journa (Journal of Neuroscience Methods)l:
Han-Jeong Hwang, Jeong-Hwan Lim, Young-Jin Jung, Han Choi, Sang Woo Lee, and Chang-Hwan Im, "Development of an SSVEP-based BCI Spelling System Adopting a QWERTY-Style LED Keyboard," J. Neurosci. Methods, vol. 208, pp. 59-65, 2012.