He. Boos et al., MODIFIED TETRAHEDRON EQUATIONS AND RELATED 3D INTEGRABLE MODELS .1., International journal of modern physics A, 10(28), 1995, pp. 4041-4063
Using a modified version of the tetrahedron equations we construct a n
ew family of N-state three-dimensional integrable models with commutin
g two-layer transfer matrices. We investigate a particular class of so
lutions to these equations and parametrize them in terms of elliptic f
unctions. The corresponding models contain one free parameter, k - an
elliptic modulus.