1. American Academy of Pain Medicine. http://www.painmed.org/patientcenter/facts_on_pain.aspx. {Online; accessed 5-June-2017}. American Academy of Pain Medicine. http://www.painmed.org/patientcenter/facts_on_pain.aspx. {Online; accessed 5-June-2017}.
2. CAESAR competition. https://competitions.cr.yp.to/caesar.html. {Online; accessed 5-June-2017}. CAESAR competition. https://competitions.cr.yp.to/caesar.html. {Online; accessed 5-June-2017}.
3. DAQ NI USB-6351. http://www.ni.com/en-us/support/model.usb-6351.html. {Online; accessed 5-June-2017}. DAQ NI USB-6351. http://www.ni.com/en-us/support/model.usb-6351.html. {Online; accessed 5-June-2017}.
4. EMC Improvement Guidelines. http://www.atmel.com/images/doc4279.pdf. {Online; accessed 5-June-2017}. EMC Improvement Guidelines. http://www.atmel.com/images/doc4279.pdf. {Online; accessed 5-June-2017}.
5. Federal Communications Commission (FCC) ID. http://www.fcc.gov/encyclopedia/fcc-search-tools. {Online; accessed 5-June-2017}. Federal Communications Commission (FCC) ID. http://www.fcc.gov/encyclopedia/fcc-search-tools. {Online; accessed 5-June-2017}.