@article{PismaZhETF.55.639,
    title = {Unambiguous dependence of the period of the helicoidal magnetic structure in heavy magnetic rare-earth materials on the ratio c/a of the crystal lattice; possible association with an electron topological transition},
    author = {Andrianov, A. V.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {55},
    issue = {11},
    pages = {639},
    year = {1992},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_19330.shtml},
}