Monosyllabic Lengthening

In regard to the discussion of monosyllabic lengthening on pg. 41, fn. 48 Brent Vine draws my attention to the recent Ph.D. dissertation by M. Kapović, Reconstruction of the Balto-Slavic Personal Pronouns, Zagreb 2006, which has an extensive treatment of the subject (pp. 147–153). Reference to Kapović's work should also be added to the bibliography cited on pg. 325, n. 1.