@article{PismaZhETF.60.258,
    title = {Localized electron states in a simple 1D chain with a loop},
    author = {Abrukina, Yu. M. and Oksengendler, B. L.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {60},
    issue = {4},
    pages = {258},
    year = {1994},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_20336.shtml},
}