@article{PismaZhETF.49.337,
    title = {Spectroscopy of multielectron centers in superconductors, at their surfaces, and in semiconductor- superconductor heterostructures},
    author = {Volkov, B. A. and Tugushev, V. V.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {49},
    issue = {6},
    pages = {337},
    year = {1989},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_16917.shtml},
}