e.g. Starostin, Dybo & Mudrak (2003); contra e.g. Vovin (2005) Starostin, Sergei A.; Dybo, Anna V.; Mudrak, Oleg A. (2003). Etymological Dictionary of the Altaic Languages. Leiden: Brill. Vovin, Alexander (2005). "The End of the Altaic Controversy: In Memory of Gerhard Doerfer". Central Asiatic Journal. 49 (1): 71–132. JSTOR41928378. (review of Starostin et al. 2003)
Shimunek, Andrew (2017). Languages of Ancient Southern Mongolia and North China: a Historical-Comparative Study of the Serbi or Xianbei Branch of the Serbi-Mongolic Language Family, with an Analysis of Northeastern Frontier Chinese and Old Tibetan Phonology. Wiesbaden: Harrassowitz Verlag. ISBN978-3-447-10855-3. OCLC993110372.