@article{oai:repository.dl.itc.u-tokyo.ac.jp:00027531, author = {Yoshida, Yutaka}, journal = {東京大学言語学論集}, month = {Jan}, note = {熊本裕先生退職記念号 Festschrift for Professor Hiroshi KUMAMOTO, Articles}, pages = {375--394}, title = {When Did Sogdians Begin to Write Vertically?}, volume = {33}, year = {2013} }