Wis. Stat. § 877.20

Any heir against whom recovery is made under ss. 877.18 and 877.19 may maintain an action against the other heirs to whom any assets may have been paid or delivered by the personal representative, jointly or against any of them separately, for a just and equal contribution, and shall be entitled to recover from each defendant an amount that is in the same proportion to the sum collected from the plaintiff as the value of the assets delivered to that defendant bore to the value of all the assets delivered to all the heirs.