TY  - RPRT
TI  - How competitive is competitive bidding?
AU  - L Paringer
AU  - N McCall
PY  - 1991
DO  - 10.1377/hlthaff.10.4.220
UR  - https://pubmed.ncbi.nlm.nih.gov/1778557/
ID  - 1778557
ER  -