TY  - RPRT
TI  - Simple systems that exhibit self-directed replication
AU  - Reggia, James A.
AU  - Armentrout, Steven L.
AU  - Chou, Hui-Hsien
AU  - Peng, Yun
PY  - 1993
UR  - https://ntrs.nasa.gov/citations/19930045544
ID  - 19930045544
ER  -