(1) The person obliged is to inform the person entitled to preemption without undue delay of the contents of the contract concluded with the third party. Notice by the third party takes the place of the notice by the person obliged.
(2) The right of preemption for plots of land may be exercised only before the end of a period of two months after notice has been received, and the right of preemption for other objects only before the end of a period of one week after notice has been received. If a period of time is specified for exercise of the right, this period replaces the statutory period.