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@Article{12821,
    author = "Dariusz Grzybek",
    title  = "Piezoelectric generators: materials and structures",
    year   = "2013",
    journal = "Pomiary Automatyka Robotyka",
    month   = "1",
    doi     = "10.14313/PAR_200/123",
    volume  = "17",
    number  = "200",
    pages  = "123-129",
    keywords = "energy harvesting, piezoelectric, piezoelectric generator, wireless sensors",
    url  = "https://par.pl/Archiwum/2013/10-2013/Piezoelectric-generators-materials-and-structures"
    }