Olsen Birgit Anette. The Proto-Indo-European instrument noun suffix *-tlom and its variants

Copenhagen: Munksgaard, 1988. — 47 p. — (Det Kongelige Danske videnskabernes selskab historisk-filosofiske meddelelser 55). — ISBN: 8773041823."This book deals with the Indo-European instrument nouns in *-tlom, *-trom, *-d^hlom,*-d^hrom, *-tlah2, *-trah2, *-d^hlah2 and *-d^hrah2 according to the traditional reconstruction. On the basis of a series of common derivatives it is argued that the -l-suffixes were originally unmarked, while the -r-variants were restricted to roots containing a liquid, -r- or -l-. Similarly the suffixes containing an aspirate were only found immediately following a root-final consonantal, unvoiced laryngeal, *h₁ or *h₂. The original paradigm consisted of a root-accented neuter and a suffix-accented collective (later feminine). Thus the morpho-phonemic variation of the suffix *-tlom is considered to be fully predictable for some stage of pre-Indo-European. Finally it is claimed — for phonetic as well as morphological reasons — that
the aspirated variant of the suffix was *-t^hlom, not *-d^hlom etc."