Self-assembly of 4-sided fractals in the Two-Handed Tile Assembly Model. - Jacob Hendricks; Joseph Opseth (Nat. Comput., 2019)

Hierarchical growth is necessary and (sometimes) sufficient to self-assemble discrete self-similar fractals. - Jacob Hendricks; Joseph Opseth; Matthew J. Patitz; Scott M. Summers (Nat. Comput., 2020)