From pre-Roman to Roman Latin, through "modern" dialects: the origins of Lat. lumbricus 'earthworm' from Lat. umbilicus 'navel'
Mario Alinei, From pre-Roman to Roman Latin, through "modern" dialects: the origins of Lat. lumbricus 'earthworm' from Lat. umbilicus 'navel', in Scritti in onore di Eric Pratt Hamp per il suo 90. compleanno, a cura di G. Belluscio e A. Mendicino, Rende, Università della Calabria, 2010, pp. 3-13. https://web.archive.org/web/20241025213053/http://www.continuitas.org/texts/alinei_lumbricus.pdf
Mario Alinei
2010
The Paleolithic Continuity Paradigm - Парадигма палеолитског континуитета