  In this work we study the dynamics of opinion formation in the Sznajd model
with anticonformity on regular lattices in two and three dimensions. The
anticonformity behavior is similar to the introduction of Galam's contrarians
in the population. The model was previously studied in fully-connected
networks, and it was found an order-disorder transition with the order
parameter exponent $\beta=1/2$ calculated analytically. However, the other
phase transition exponents were not estimated, and no discussion about the
possible universality of the phase transition was done. Our target in this work
is to estimate numerically the other exponents $\gamma$ and $\nu$ for the
fully-connected case, as well as the three exponents for the model defined in
square and cubic lattices. Our results suggest that the model belongs to the
Ising model universality class in the respective dimensions.
