1. The emergence of “4D printing”;Tibbits,2013
2. Biomimetic 4D printing;Gladman;Nat. Mater.,2016
3. Printing soft matter in three dimensions;Truby;Nature,2016
4. The next wave: 4D printing programing the material world;Campbell,2014
5. 4D Printing and universal transformation;Tibbits,2014