@article{TMF_2011_169_2_a2,
     author = {S. \`E. Derkachev},
     title = {The~$R$-matrix factorization, $Q$-operator, and variable separation
},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {204--217},
     publisher = {mathdoc},
     volume = {169},
     number = {2},
     year = {2011},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_2011_169_2_a2/}
}