Reyna, Stephen P. Department I, MPI for Social Anthropology, Max Planck Society;
https://www.degruyter.com/downloadpdf/books/9783110822168/9783110822168.55/9783110822168.55.xml (Any fulltext)
Reyna, S. P. (1975). Age differential, marital instability, and venereal disease: factors affecting fertility among the Northwest Barma. In M. Nag (Ed.), Population and social organization (pp. 55-74). The Hague; Paris: Mouton.