United States. Congress, Public Laws of the 110th United States Congress…
“ DEFINITION OF COVERED PERMANENT IMPROVEMENT- In this paragraph, the term `covered permanent improvement' means a permanent improvement (including an interest in such an improvement) that is-- ` (i) included in the estate of a decedent; and ` (ii) attached to a parcel of trust or restricted land that is also, in whole or in part, included in the estate of that decedent. ”
