Die Sprache. Zeitschrift für Sprachwissenschaft. — Vol. 13. — 1967. — P. 84-87.
In this review of M. B. Emeneau's contribution to the volume "Ancient Indo-European Dialects" (Berkeley/Los Angeles 1966) Mayrhofer discusses several problems of Middle Indo-Aryan linguistics, including the possibility that some Middle Indo-Aryan languages may contain traces of Old Indo-Aryan (or Indo-Iranian) dialects that were different from (Vedic) Sanskrit.