http://rdb.name/tdcs4.png
http://www.aipass.org/files/TDCS_State%20of%20the%20art.pdf
https://www.reddit.com/r/tDCS
https://www.reddit.com/r/tdcs/wiki/devices
http://tdcsplacements.com/
http://thebrainstimulator.net/shop/
https://speakwisdom.wordpress.com/
http://www.diytdcs.com/2013/10/summit-on-transcranial-direct-current-stimulation-uc-davis-sept-5-2013-videos/
http://humanspatialcognitionlab.org/wp-content/uploads/2016/04/KimEkstromTandon_NLM_proofs.pdf