Villain transformation theory of the anisotropy ferrimagnetic spin chain

Villain transformation for XXZ anisotropic ferrimagnetic spin chain

Villain transformation for ferrimagnetic spin chain with dimerization

Magnetic properties of a ferrimagnetic mixed spin chain with inhomogeneous crystal-field anisotropy

Bond operator theory of Heisenberg ferrimagnetic spin chain

Schwinger-boson mean-field theory of an anisotropic ferrimagnetic spin chain

Dyson–Maleev mean-field theory of ferrimagnetic spin chain