TY  - RPRT
TI  - Building protein structure and function from modular units.
AU  - I D Campbell
AU  - A K Downing
PY  - 1994
DO  - 10.1016/0167-7799(94)90078-7
UR  - https://pubmed.ncbi.nlm.nih.gov/7764899/
ID  - 7764899
ER  -