At the end of Br A2 and the beginning of phase Br A3, the penetration of the Mad’arovce culture into the area of the Northern group led to significant changes and the movement of its bearers through the area of the Vatya culture to the south. South of the mouth of the Sió river and in the southern parts of the confluence of the Danube and Tisza rivers, under the influence of Southern and Northern Danube region encrusted pottery, the Szeremle group will be formed, a style or phase in the development of encrusted pottery whose decorative repertoire will be dominated by motifs from the Northern Danube, and to a much lesser extent by those from the Southern Danube pottery. The end of the Early and the beginning of the Middle Bronze Age on the territory of Serbia, that is, in the south-western and southern parts of Bačka, in certain localities in Srem and southern and south-eastern Banat, will be marked by the appearance of Szeremle encrusted pottery.
Mirko Pekovic (Thu,) studied this question.