Woo, L Y; Glass, R S; Novak, R F & Visser, J H. Effect of electrode material and design on sensitivity and selectivity for high temperature impedancemetric NOx sensors, article, September 23, 2009; (https://digital.library.unt.edu/ark:/67531/metadc934562/m1/1/: accessed April 25, 2019), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .