@article{PismaZhETF.52.890,
    title = {Observation of magnetic dipole and electric dipole electron transitions in the ground multiplet of the rare-earth ion in $TmFeO_3$},
    author = {Kozlov, G. V. and Mukhin, A. A. and Pronin, A. Yu. and Prokhorov, A. S. and Zelezny, V. and Petzelt, J.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {52},
    issue = {5},
    pages = {890},
    year = {1990},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_17489.shtml},
}