G. C. Bernardo, “The relationship of Sparta, Elis and the Thessalian poleis with their perioikoi and the problem of the ‘Lacedaemonian polis’”, Rev. Mus. Arqueol. Etnol., vol. 38, pp. 71–90, Jul. 2022, doi: 10.11606/issn.2448-1750.revmae.2022.186673.