@article{HoriuchiN:1978-03-15,
author="Horiuchi, N and Namiki, M",
title="New Artificial Plastic Opal",
journal="Journal of the Gemmological Society of Japan",
ISSN="03855090",
publisher="Gemmological Society of Japan",
year="1978",
month="mar",
volume="5",
number="1",
pages="43-44",
URL="http://ci.nii.ac.jp/naid/110003367798/en/",
DOI="",
}