@article{PismaZhETF.8.479,
    title = {Influence of the Purity of Superconducting Niobium on the Shape of the Magnetization Curve},
    author = {Karasim, V. R. and Nisel'son, L. A. and Petrusevich, I. V. and Shal'nikov, A. I. and Shebalin, I. Yu.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {8},
    issue = {9},
    pages = {479},
    year = {1968},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_26031.shtml},
}