Restriction matrix is of m by 3 matrix where m is the number of restrictions.
A typical row of this matrix (k,i,j), which means that (i,j) element of Ak matrix is set to 0.
Ak is a VAR coefficient matrix (k = 1,....p).
Under H1, the model is full VAR.
The bootstrap test is conducted using the GLS estimation under the parameter restrictions implied by the null hypothesis: see Kim (2014) for details.
Kim (2014) found that the bootstrap based on OLS can show inferior small sample properties.
There are two versions of the bootstrap: the first is based on the iid resampling and the second based on wild bootstrapping.
The Wild bootstrap is conducted with Mammen's two-point distribution.