^Bauer, Brigitte L. M., & Georges-Jean Pinault. (ed.). 2003. Introduction: Werner Winter, ad multos annos. In: Language in Time and Space: A Festschrift for Werner Winter on the Occasion of His 80th Birthday, pp. xxiii–xxv . Berlin: Walter de Gruyter & Co.
^Collinge, N. E. 1985. The Laws of Indo-European. Amsterdam: John Benjamins, pp. 225ff.
^Winter, Werner (ed.). 1994. On Languages and Language: The Presidential Addresses of the 1991 Meeting of the Societas Linguistica (= Trends in Linguistics 78). Berlin: Walter de Gruyter & Co., p. viii.
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