@article{lee2013-24260218,
  author  = {Lee, T. S. and Goh, S. J. and Quek, S. Y. and Phillips, R. and Guan, C. and Cheung, Y. B. and Feng, L. and Teng, S. S. and others},
  title   = {{A brain-computer interface based cognitive training system for healthy elderly: a randomized control pilot study for usability and preliminary efficacy}},
  journal = {PloS one},
  year    = {2013},
  doi     = {10.1371/journal.pone.0079419},
  pmid    = {24260218},
  url     = {https://doi.org/10.1371/journal.pone.0079419}
}