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\bibitem{APeyman2009} A Peyman, C. G., E H Grant, G Vermeeren and L Martens. (2009). Variation of the dielectric properties of tissues with age: the effect on the values of SAR in children when exposed to walkie{\^a}{\texteuro}{\textquotedblleft}talkie devices. \textit{Phys Med Biol.}, \textit{54}, 227--241.

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