@article{KoshibaTatsumi:2000-03-00,
author="Koshiba, Tatsumi and Tanaka, Masayasu",
title="Evaluation of the Added Functions Based on Concept Engineering",
journal="The journal of commerce",
ISSN="02867702",
publisher="Chuo University",
year="2000",
month="mar",
volume="41",
number="5",
pages="213-231",
URL="http://ci.nii.ac.jp/naid/110000232312/en/",
DOI="",
}