1. Murphy SV, Atala A (2014) Review 3D bioprinting of tissues and organs. Nat Biotechnol 32(8):773–785
2. I. D. R. Smalley and B. Park, “United States Patent (19),” no. 19, 1992
3. Zopf DA, Flanagan CL, Wheeler M, Hollister SJ, Green GE (2014) Treatment of severe porcine tracheomalacia with a 3-dimensionally printed, bioresorbable, external airway splint. JAMA Otolaryngol 140(1):66–71
4. Michelson RC (2004) Novel approaches to miniature flight platforms. J Aerosp Eng 218(6):363–373
5. Mortice Z (2016) Nature does it better: biomimicry in architecture and engineering. Vine 2016:1–49