It included a new freezing of prices and the replacement of the overnight rate with new financial instruments which included in its yield calculation the anticipated rates of both private and federal papers .
The second Collor Plan took place in January 1991 .
Collor Plan included a new freezing of prices and the replacement of the overnight rate with new financial instruments which included in Collor Plan 's yield calculation the anticipated rates of both private and federal papers .
The second Collor Plan took place in January 1991 .