From: Symmetry analysis and equivalence transformations for the construction and reduction of constitutive models
\(\varvec{v}^1_1\)
\(\varvec{v}^2_1\)
0
\(\beta \varvec{v}^1_1+\varvec{v}^2_1\)
\(-\beta \varvec{v}^1_1-\varvec{v}^2_1\)