PT  - JOURNAL ARTICLE
ED  - , 
TI  - PRODUCTS & MATERIALS
AID  - 10.1126/science.266.5182.159
DP  - 1994 Oct 07
TA  - Science
PG  - 159--159
VI  - 266
IP  - 5182
4099  - http://science.sciencemag.org/content/266/5182/159.short
4100  - http://science.sciencemag.org/content/266/5182/159.full
SO  - Science1994 Oct 07; 266