@article{PismaZhETF.25.381,
    title = {Metal phonon-spectrum singularities determined by local geometry of the Fermi surface},
    author = {Avanesyan, G. T. and Kaganov, M. I. and Lisovskaya, T. Yu.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {25},
    issue = {8},
    pages = {381},
    year = {1977},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_21438.shtml},
}