Oxford University Press,

; Selected articles
* 1988: 'The coming of the Aryans to Iran and India and the cultural and ethnic identity of the Dasas', Studia Orientalia, vol. 64, pp. 195-302. The Finnish Oriental Society.
* 1995: 'The problem of the Aryans and the Soma: Textual-linguistic and archaeological evidence', in The Indo-Aryans of Ancient South Asia: Language, Material Culture and Ethnicity. Ed. George Erdosy. Berlin/NY: Walter de Gruyter, 1995, pp. 353-81.
* 1998: 'Aryan languages, archaeological cultures,