@article{PismaZhETF.44.237,
    title = {Integrability of a classical XY chain},
    author = {Granovskii, Ya. I. and Zhedanov, A. S.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {44},
    issue = {5},
    pages = {237},
    year = {1986},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_21034.shtml},
}