Bomhard Allan. An Outline of the Historical Phonology of Indo-European

In: ORBIS. Bulletin international de Documentation linguistique — 1975 — Tome XXIV — №2. — p. 354 - 390.1975 article by Allan R. Bomhard comparing Proto-Indo-European and Proto-Semitic. Note: This was Bomhard's first paper on distant linguistic relationship. His views have matured considerably since then.