Columbia subject headings:
Auctions--Mathematical models.
Government purchasing--Mathematical models.
Industrial procurement--Mathematical models.
Letting of contracts--Mathematical models.
Harvard subject headings:
Auctions--Mathematical models.
Government purchasing--Mathematical models.
Industrial procurement--Mathematical models.
Letting of contracts--Mathematical models.
Princeton subject headings:
Auctions--Mathematical models.
Government purchasing--Mathematical models.
Industrial procurement--Mathematical models.
Letting of contracts--Mathematical models.