Charles Plott has designed, tested and implemented several different types of auctions for the sale of complex items.He was the first to design and implement a continuous, combinatorial auction.The initial auction was used as a prototype for the combinatorial spectrum auction designs.That auction mechanism was refined and used for the auction of natural rubber, the sale of fishing rights in Victoria, Australia, and several business related auctions. Variations of the auction have also been tested for use in the auction of electric power transmission and environmental goods.He also designed, tested and implemented a continuous, simultaneous, ascending price auction that is used for business related auction of many items.

bacause the spectrum means spectrum so the spectrum is known as spectrum is called as spectrum

To auction is a verb, an auction is a noun.

you auction..

an auction