D. Colorado September 1989 casesRivera v. East Otero School Dist. R-1Lamkin v. BowenBarry v. AndersonAlvarado Partners, L.P. v. MehtaAyers v. SpeerLuna v. City and County of DenverUnited States v. LaymonZimmerman Metals v. United Eng.Rivera v. AT&T Information Systems, Inc.