@article{PismaZhETF.49.68,
    title = {Experimental test of a possible violation of the Paul! principle},
    author = {Novikov, V. M. and Pomanskii, A. A.},
    journal = {Письма в ЖЭТФ},
    volume = {49},
    issue = {2},
    pages = {68},
    year = {1989},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_16835.shtml},
}