@article{PismaZhETF.50.40,
    title = {The structure of superconducting $TlBa_2$ ($Ca_{0.87}T_{0.13})Cu_2O_7$ single  crystals with T{_c} \~ 80 λ},
    author = {Kolesnikov, N. N. and Korotkov, V. E. and Kulakov, M. P. and Lagvenov, G. A. and Molchanov, V. N. and Muradyan, L. A. and Simonov, V. I. and Tamazyan, R. A. and Shibaeva, R. P. and Shchegolev, I. F.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {50},
    issue = {1},
    pages = {40},
    year = {1989},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_17036.shtml},
}