Analysis of information sources in references of the Wikipedia article "Dharmachakra" in English language version.
The importance of the conception of Dharma in early brāhmanic thought is so considerable that it has seemed either that it replaced Ṛta as the leading philosophical and religious conception or that the earlier concept was at some time absorbed into it. It is probably more true that Dharma was conceived as an aspect of Ṛta which became so useful for framing religious, moral and social regulations, that interest in it and discussion of its applications to social and moral order eclipsed all discussions of metaphysical and theological ideas.
