RT Journal Article
SR Electronic
T1 Products & Materials
JF Science
JO Science
FD American Association for the Advancement of Science
SP 1566
OP 1566
DO 10.1126/science.248.4962.1566
VO 248
IS 4962
YR 1990
UL http://science.sciencemag.org/content/248/4962/1566.abstract
AB