@article{callegari2013total,
  title={Total natural radioactivity, Tuscany, Italy},
  author={Callegari, Ivan and Bezzon, Gian Pietro and Broggini, Carlo and Buso, Gian Paolo and Caciolli, Antonio and Carmignani, Luigi and Colonna, Tommaso and Fiorentini, Giovanni and Guastaldi, Enrico and Xhixha, Merita Ka{\c{c}}eli and others},
  journal={Journal of Maps},
  volume={9},
  number={3},
  pages={438--443},
  year={2013},
  publisher={Taylor \& Francis}
}