Coppersmith's bivariate theorem

[Constantinos Patsakis <kpatsak@gmail.com>]

Hello everyone,

I would like to know if anyone of you is aware of any implementation
of Coppersmith's bivariate theorem for finding small roots on
polynomials modulo n. For the univariate case pari has the built in
function zncoppersmith, but for the bivariate case I cannot find
anything.

Thanks for your time,

Costas