TY  - RPRT
TI  - What is a valid basis for superimposition?
AU  - F F Schudy
PY  - 1999
DO  - 10.1016/s0889-5406(99)70155-1
UR  - https://pubmed.ncbi.nlm.nih.gov/10223898/
ID  - 10223898
ER  -