@misc{ultralow+frequency+dielectric+dispersion+in+pzt+pfs+ferroelectric+ceramic,
    author = {Osak, Andrzej},
    title = {Ultralow frequency dielectric dispersion in PZT + PFS ferroelectric ceramic},
    journal = {Journal of Advanced Dielectrics},
    date = {2014},
    number = {Vol. 4, No. 3},
    ISSN = {2010-1368}
}