Metamaterials for remote generation of spatially controllable two dimensional array of microplasma, viewed February 21, 2018 (Sameer Sonkusale, Nanolab, Department of Electrical and Computer Engineering, Tufts University, Medford, MA, author of article in Scientific reports (2014)) http://dx.doi.org/10.1038/srep05964

Tufts University, School of Engineering, Department of Electrical and Computer Engineering, website viewed Feb. 21, 2018 (Sameer Sonkusale, Professor at Tufts; Ph.D. University of Pennsylvania; Research: Integrated Circuits for Sensors and Instrumentation, Nanoelectrochemical Systems on Silicon, CMOS Image Sensors for Scientific Imaging) http://engineering.tufts.edu/ece/People/sonkusale.htm