books.google.com - This study describes a diachronic change of the obstruent consonants in the central area of Korea, with attention to ONSET and CODA lenitions....http://books.google.com/books/about/Consonant_lenition_in_Korean_and_the_Mac.html?id=GmW6k8La7nkC&utm_source=gb-gplus-shareConsonant lenition in Korean and the Macro-Altaic question
