@article{PismaZhETF.20.680,
    title = {Scattering in two-dimensional model with Lagrangian $L = (1/\gamma)[(1/2)(\partial_\mu u)^2 +m^2 (\cos u-1)]$},
    author = {Aref'eva, I. Ya. and Korepin, V. E.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {20},
    issue = {10},
    pages = {680},
    year = {1974},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_27379.shtml},
}