Research Links for Continuum Surface

http://www.instructables.com/id/Pneumatic-Muscles/

http://www.practicalarduino.com/news/id/431

http://www.robotshop.ca/dynalloy-flexinol-air-valve.html

http://www.gemssensors.com/Search.aspx?q=general-purpose-valves

http://www.ehow.com/how-does_5030129_pneumatic-solenoid-valve-work.html

http://www.ehow.com/way_5657028_pneumatic-solenoid-valve-tutorial.html