Orok
[, другое название: Ulta, Ujlta, орокский язык]Классификация: Tungusic
·на грани исчезновения
This paper from 2010 is by Yamada, Yoshiko from the Hokkaido University. It contains general information about the language of Orok, its relative languages that are located close by, and the shift of the language amongst other topics that deal with Orok/Uilta.