Bakker, Eric, Gastón Crespo, Ewa Grygolowicz-Pawlak, Günter Mistlberger, Marcin Pawlak, and Xiaojiang Xie. 2011. “Advancing Membrane Electrodes and Optical Ion Sensors”. CHIMIA 65 (3):141. https://doi.org/10.2533/chimia.2011.141.