References 60 and 61 are:
60 Joo JJ, Sanders B. Optimal Location of distributed actuators within an in-plane multi-cell morphing mechanism.
Journal of intelligent material systems and structures 2009; 20: 481.
61 Mattioni F, Weaver PM, Potter KD, Friswell MI. The application of thermally induced multistable composites to morphing aircraft structures, Proceedings of Industrial and Commercial Applications of Smart Structures Technologies
2008, 10 March 2008. DOI:10.1117/12.776226.
From the same paper as the previous 6 images
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