@article{ZNSL_1987_161_a7,
     author = {E. K. Sklyanin},
     title = {Poisson structure of classical $XXZ$-chain},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {88--97},
     year = {1987},
     volume = {161},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1987_161_a7/}
}