Thanks for your question and for the expert who answer your question. She cites her study for this topic from an Indonesian perspective. Since you are doing serious research, why not google your topic where you can get some basic info . If you can access JSTOR in your regional library , you can obtain more sources of high quality . I do not know Korean language and culture, I have just been to South Korea for a conference briefly stayed there a couple days .Personally I am not qualify to advise you .I did try to google it and check with Jstor just now and have found my efforts are effective . Hope this can be of some help to you. Mei-kao Kow