Kim, Tae-Yeup, 1999. A Study on Korean Unmarked Final Endings. Studies in Modern Grammar 18, 111-127. This is a study to investigate the concept and the function of Korean unmarked final endings. Korean unmarked final endings have the function of the speech level and the sentence ending. The unmarked final endings are diverted from conjunctive endings. The two functions of unmarked final endings are related with the syntactic properties of their original properties. We suppose that the endings changed their syntactic properties with the deletion of the second clause and the auxiliary verb of the auxiliary structure. Despite these changes, these endings maintain the fundamental properties of the speech level and the sentence ending. If our proposal is on the right track, we can conclude that the conjunctive endings have two functions. This functional diversion of conjunctive endings can be interpreted as a grammaticalization.

Kim, Tae-Yeop. 1998. A Morphological Interpretation of Korean Sentence Ending Elements. Studies in Modern Grammar 13, 231-252. The main purpose of this paper is to interpret the Korean sentence ending elements in morphological terms. The sentence ending elements in Korean are composed of one or more elements, one of which is obligatory. The ending elements are analyzed into two types, "equipped" and "unequipped". The former is obligatory to terminate a sentence. The latter is further divided into two types: the one which has undergone functional shift from conjunctive-ending elements, the otrher from free final ending elements.