As a postdoctoral researcher, he spent several years at the University of California, Berkeley, where he became a close collaborator of Johanna Nichols.
Her research interests include the Slavic languages, the linguistic prehistory of northern Eurasia, language typology, ancient linguistic prehistory, and languages of the Caucasus, chiefly Chechen and Ingush.
The language is double-marking in the typology of Johanna Nichols, meaning that it marks grammatical relations on both the dependent phrases and phrasal heads.
Mike Nichols | Nichelle Nichols | Harvey Nichols | Red Nichols | Jeb Loy Nichols | Johanna Kurkela | Joe Nichols | Peter Nichols | Johanna Drucker | Stan Nichols | Johanna Gadski | George Nichols | David E. Nichols | Buckingham Browne & Nichols | Vincent Nichols | Nichols School | Johanna Kustannus | Grace Nichols | David Nichols | William Flynt Nichols | Nichols Hall | Nichols | Kenneth Nichols | Keith Nichols | Johanna Wokalek | Johanna Stegen | Johanna Spyri | Jóhanna Sigurðardóttir | Johanna Sibylla of Hanau-Lichtenberg | Johanna Reiss |