Chikobava, Arnold. The Problem of the Ergative Construction in Ibero-Caucasian Languages. Vol. 2: Theories on the Nature of the Ergative Construction (Ergatiuli konstruktsiis problema iberiul-kavkasiur enebshi), 1961. In Georgian.

არნოლდ ჩიქობავა.
ერგატიული კონსტრუქციის პრობლემა იბერიულ-კავკასიურ ენებში. [ტ. 2], ერგატიული კონსტრუქციის რაობის თეორიები.
საქ. სსრ მეცნ. აკად., აკად. ნ. მარის სახელობის ენის ინსტიტუტი.
თბილისი: საქ. სსრ მეცნ. აკად. გამ-ბა და სტ., 1961.
169 გვ. ტირაჟი — 1000 ც. რეზუმე რუსულ ენაზე. დამატებითი თავფურცელი რუსულ ენაზე.
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Arnold Chikobava.
The Problem of the Ergative Construction in Ibero-Caucasian Languages. Vol. 2: Theories on the Nature of the Ergative Construction (Ergatiuli konstruktsiis problema iberiul-kavkasiur enebshi. T. 2: Ergatiuli konstruktsiis raobis teoriebi).
Academy of Sciences of the GSSR. N. Marr Institute of Language.
Tbilisi: Publishing House of the Academy of Sciences of the Georgian SSR, 1961.
169 pp. Hardcover. Edition of 1000 copies. Summary in Russian. Additional title page in Russian.

This 1961 monograph by Arnold Chikobava, one of the most influential linguists of the 20th century and the founding father of the "Ibero-Caucasian" theory, represents a monumental contribution to the study of ergativity. The text provides a deep dive into the internal logic of the ergative construction—a grammatical pattern prevalent in Georgian, Chechen, Adyghe, and other indigenous Caucasian languages—including the arrangement of various historical and contemporary theories regarding its origins and structural nature. In this second volume, Chikobava critically evaluates the "passive," "active," and "nominative" theories of the ergative, arguing from the perspective of his own systemic classification of the Ibero-Caucasian language family.  As a vital primary source, this volume documents the mid-century academic shift in Soviet linguistics following the rejection of Marrism, a transition in which Chikobava played a central role. Published by the Academy of Sciences in an edition of 1000 copies, this work remains an essential bibliographical rarity for caucasiologists, typologists, and historians of linguistics seeking to understand the structural evolution of the Caucasian verb and the development of Soviet linguistic thought.