Key points are not available for this paper at this time.
This publication was financed within the framework of programme titled Dialogue introduced by the Minister Science and Higher Education between 2016 and 2019. , the author (s) disclosed receipt of the following support for their research: state assignment of Institute of ethnology and anthropology, Moscow, (MBu, DD). Fundação para a Ciência e a Tecnologia (IF/00346/2014) awarded to C-MV.
Kowal et al. (Thu,) studied this question.