Airoldi, Alessandro, Paolo Bettini, Matteo Boiocchi, and Giuseppe Sala. “Composite Elements for Biomimetic Aerospace Structures With Progressive Shape Variation Capabilities”. Advances in Technology Innovation 1, no. 1 (July 1, 2016): 13-15. Accessed August 6, 2020. http://ojs.imeti.org/index.php/AITI/article/view/157.