The category "mechanism", "legal mechanism" and legal studying of legal validity
The article reviews the topical issues of category «mechanism», «legal mechanism» application in legal research. It's marked features of these categories: on the one hand, it is widespread, and on the other hand, the lack of uniformity of mechanism and legal mechanism construction. It is made conclusions about the necessity methodological approach elaboration to categories «mechanism», «legal mechanism», and that their application is a variation of legal validity systematic study.