TY  - RPRT
TI  - FREX: a query interface for biological processes with hierarchical and recursive structures.
AU  - Ken Ichiro Fukuda
AU  - Yuki Yamagata
AU  - Toshihisa Takagi
PY  - 2004
UR  - https://pubmed.ncbi.nlm.nih.gov/15089754/
ID  - 15089754
ER  -