@article{PismaZhETF.105.53,
    title = {Non-Abelian vortex in four dimensions as a critical  Superstring},
    author = {Shifman, M. and Yung, A.},
    journal = {Письма в ЖЭТФ},
    volume = {105},
    issue = {1},
    pages = {53},
    year = {2017},
    doi = {10.7868/S0370274X17010131},
    url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X17010131},
    note = {[JETP Letters 105, 60 (2017)]}
}