Agda
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A. Abel, et al. Verifying Haskell Programs Using Constructive Type Theory, ACM SIGPLAN Workshop Haskell'05, Tallinn, Estonia, 30 September 2005 http://www.tcs.informatik.uni-muenchen.de/~abel/haskell05.pdf
M. Benke et al. Universes for generic programs and proofs in dependent type theory. Nordic Journal of Computing, 10(4):265-289, 2003. http://www.cs.chalmers.se/~marcin/Papers/universes.pdf
T. Coquand et al. Connecting a Logical Framework to a First-Order Logic Prover. FroCos 2005, pp. 285-301.