@article{PismaZhETF.22.140,
    title = {Direct measurement of the magnetic and deformation contribution to birefringence in the weakly-ferromagnetic phase of hematite ($\alpha-Fe_2O_3$)},
    author = {Merkulov, V. S. and Rudashevskii, E. G. and LeGalle, A.},
    journal = {Письма в ЖЭТФ},
    volume = {22},
    issue = {3},
    pages = {140},
    year = {1975},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_23279.shtml},
}