从理论探索到学派创建——郑杭生教授从教50周年学术研讨会侧记
종이론탐색도학파창건——정항생교수종교50주년학술연토회측기
From Exploration into Theories to the Creation of an Academic School——Sidelights on the Academic Symposium for the 50th Anniversary of the Teaching of Professor ZHENG Hang-sheng