10.3347/kjp.2009.47.2.83 10.3347/kjp.2009.47.2.159 10.3347/kjp.2009.47.4.381 10.3347/kjp.2010.48.3.237 10.3347/kjp.2010.48.4.319 10.3347/kjp.2011.49.3.299 10.3347/kjp.2011.49.3.313 10.3347/kjp.2012.50.2.127 10.3347/kjp.2012.50.4.301 10.3347/kjp.2016.54.5.685