@article{PismaZhETF.76.60,
    title = {Energy bounds of linked vortex states},
    author = {Protogenov, A. P. and Verbus, V. A.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {76},
    issue = {1},
    pages = {60},
    year = {2002},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_9182.shtml},
}