@article{PismaZhETF.27.673,
    title = {Phase transitions in boracite $Co_3B_7O_{13}I$},
    author = {Kovalev, A. V. and Plakhtii, V. P. and Andreeva, G. T.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {27},
    issue = {12},
    pages = {673},
    year = {1978},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_23800.shtml},
}