Jintai Ding, Jason E. Gower, and Dieter S. Schmidt,
Multivariate Public Key Cryptosystems.
Advances in Information Security book series, Springer, 2006.

• page 31, middle of page    A[(m+1)i+j]=0 the '=0' makes no sense here and needs to be deleted.
• page 144, line 10: the term x_[i+1]x_i+6    should read    x_[i+1]x_[i+6]
• page 145, line 11: (z₂⁴ + z₃⁴ +z₃² z₈² +    should not have the term    +z₃⁴