@article{ZNSL_2010_374_a2,
     author = {P. N. Bibikov and P. P. Kulish},
     title = {Three-magnon problem and integrability of rung-dimerized spin ladders},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {44--57},
     publisher = {mathdoc},
     volume = {374},
     year = {2010},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2010_374_a2/}
}