Konggan, idong ŭi kaenyŏm kwa ŏnŏhwaYi, Kang-ho (Professor of German language and literature) · First published 2015Open the Tome
Han'guk kyŏngje ŭi saeroun sŏngjang p'aerŏdaim kwa chŏngch'aek kwaje mosaekSi-uk Yi, Kang-ho Yi · First published 2008Open the Tome