@article{PismaZhETF.69.812,
    title = {A sharp decrease of resistivity in La$_{0.7}$Ca$_{0.3}$Mn$_{0.96}$Cu$_{0.04}$O$_3$: Evidence for Cu assisted coherent tunneling of spin polarons},
    author = {Sergeenkov, S. A. and Bougrine, H. and Ausloos, M. and Cloots, R.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {69},
    issue = {11},
    pages = {812},
    year = {1999},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_14425.shtml},
}