Naoyuki Tsuruta Mari Matsumura Sakashi Maeda A Support System for Making Archive of Bi-directional Remote Lecture - Photometric Calibration -. 610-617 2009 ICIC (2) http://dx.doi.org/10.1007/978-3-642-04020-7_65 conf/icic/2009-2 db/conf/icic/icic2009-2.html#TsurutaMM09