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Allen, T.J. (1998): Roman healing spas in Italy: a study in design and function. PhD. University of Alberta. Alberta. DOI: 10.7939/R3XK84W4C
Shackleton Bailey, D. R. (2004). Cicero. Epistulae ad familiares. University Press.
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Magallón García, A. I. (2008). Cicerón. Cartas. Familiares. Gredos.
A research website about Archaeology of Ancient Roman Thermalism — and a meeting point for researchers and other people interested in this subject (Red Termal).