TY  - RPRT
TI  - A practical billing and payment plan for cognitive services.
AU  - D B Christensen
AU  - W E Fassett
AU  - G A Andrews
PY  - 1993
DO  - 10.1016/s0160-3450(15)30830-8
UR  - https://pubmed.ncbi.nlm.nih.gov/8475845/
ID  - 8475845
ER  -