1. Aist. https://www.aist.go.jp/index_en.html
2. Amazon warehouse robots: Mind blowing video. https://www.youtube.com/watch?v=cLVCGEmkJs0
3. Avular how published. https://www.avular.com
4. Biorobotics laboratory. http://biorobotics.ri.cmu.edu/robots/index.php
5. Birds of a feather flock together to confuse potential predators. https://phys.org/news/2017-01-birds-feather-flock-potential-predators.html