Instances of Noninteractive Zero knowlege Proofs
I'm not sure what exactly you are looking for. 

Goldreich's book ("Foundations of Cryptography, volume 1") contains an extensive discussion of non-interactive ZK proofs. So do these lecture notes of Katz (lectures 11-13): http://www.cs.umd.edu/~jkatz/gradcrypto2/scribes.html.

You could also look at this paper: Uriel Feige, Dror Lapidot, Adi Shamir: Multiple NonInteractive Zero Knowledge Proofs Under General Assumptions. SIAM J. Comput. 29(1): 1-28 (1999) and references therein.