@techreport{Schnorr2005,
  author    = {Claus Peter Schnorr},
  title     = {Security of 2t-root identification and signatures, Proceedings CRYPTO'96, Springer LNCS 1109, (1996), pp. 143{156 page 148, section 3, line 5 of the proof of Theorem 3. Correction.},
  institution = {Mathematik},
  pages     = {1},
  year      = {2005},
}