1. Adams, D. Q. (1989). Tocharian kälp- ‘obtain’, B klep- ‘stroke, investigate’, B kälyp- ‘steal’ and PIE *klep- ‘±lay hand to’. Historische Sprachforschung, 102, 241–244.
2. Adams, D. Q. (2013). A dictionary of Tocharian B (revised and greatly enlarged). Rodopi.
3. AiG II.2 = Debrunner, A. (1954). Jacob Wackernagel: Altindische Grammatik, Band II, 2 (Die Nominalsuffixe). Vandenhoeck & Ruprecht.
4. Biville, F. (1990). Les emprunts du latin au grec. Approche phonétique i, Introduction et consonantisme. Peeters.
5. Buck, C. D. (1928). A grammar of Oscan and Umbrian, with a collection of inscriptions and a glossary2. Ginn & Company.