If pertinent and significant authorities come to a party’s attention after such party has filed a pleading allowed under these Rules, or after oral argument but before a final decision, the party may promptly advise the Clerk by letter, with a copy to all parties, setting forth the citations. The letter must state, without argument, the reasons for each supplemental citation, referring either to the page of the earlier filed pleading or to a point argued orally to which the citation is pertinent. Any response by other parties must be made promptly and must be similarly limited. See Rule
37
(b)(2).