Geodesic
$R$-matrices for $SU(2)$-invariant two-leg spin ladders
Zapiski Nauchnykh Seminarov POMI, Questions of quantum field theory and statistical physics. Part 17, Tome 291 (2002), pp. 24-34

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The list of $R$-matrices for the set of eight integrable spin ladders is presented. The four of them are new. All the results were obtained using a special algorithm based on the derivation of the $R$-matrix from its local Hamiltonian density. The concrete calculations were realized on the base of the computer algebra system MAPLE V. 
@article{ZNSL_2002_291_a1,
     author = {P. N. Bibikov},
     title = {$R$-matrices for $SU(2)$-invariant two-leg spin ladders},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {24--34},
     publisher = {mathdoc},
     volume = {291},
     year = {2002},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2002_291_a1/}
}
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P. N. Bibikov. $R$-matrices for $SU(2)$-invariant two-leg spin ladders. Zapiski Nauchnykh Seminarov POMI, Questions of quantum field theory and statistical physics. Part 17, Tome 291 (2002), pp. 24-34. http://geodesic.mathdoc.fr/item/ZNSL_2002_291_a1/