@article{IchijiHiroshi:1995-01-27, author="Ichiji, Hiroshi", title="On Proving Equivalence of Programs in Page Description Languages", journal="情報処理学会研究報告. [プログラミング-言語基礎実践-]", ISSN="", publisher="Information Processing Society of Japan (IPSJ)", year="1995", month="jan", volume="95", number="15", pages="1-10", URL="http://ci.nii.ac.jp/naid/110002929567/en/", DOI="", }