48 C.F.R. § 2101.104-2
(a) General. The LIFAR conforms with the arrangement and numbering system prescribed by FAR 1.104 and 1.303. However, when a FAR part or subpart is adequate for use without further OPM implementation or supplementation, there will be no corresponding LIFAR part, subpart, etc. The LIFAR is to be used in conjunction with the FAR and the order for use is:
(b) Citation.