dissertation · 2015留뚯꽦 B�삎 媛꾩뿼�쓽 �깉濡쒖슫 留뚯꽦媛꾩뿼�쓽 �벑湲됱껜怨꾩뿉 �뵲瑜� �옣湲곌컙 異붿쟻寃곌낵0 citationsOpen accessPDF reported by metadata