@article{2006, title={Ultra-sensitive Colorimetric Method to Quantitate Hundreds of Polynucleotide Molecules by Gold Nanoparticles with Silver Enhancement}, author={Bo-Sheng LI and Li-Fan ZHAO and Chi ZHANG and Xiao-Han HEI and Fang LI and Xiao-Bo LI and Jie SHEN and Yuan-Yuan LI and Qiang HUANG and Shun-Qing XU}, journal={Analytical Sciences}, volume={22}, number={10}, pages={1367-1370}, year={2006}, doi={10.2116/analsci.22.1367} }