1. TecSense develops, manufactures and distributes optical oxygen sensors for measurement in gases and liquids, http://www.tecsense.com (as of February 2018).
2. GEA OxyCheck is an in-line quality control system that checks the oxygen (O2) content and seal integrity of every single Modified Atmosphere Pack (MAP) that leaves the thermoformer, https://www.gea.com/en/products/gea-oxycheck.jsp (as of February 2018).
3. M. Hajnsek, Electrochemical and Luminescent Sensor Structures Integrated on Common Substrate, Joanneum Research Forschungsgesellschaft mbH, US20150223742A1.
4. Optically-based molecularly imprinted polymers sensors;B. Peña;Opt. Sens.,2017
5. Sodium-selective fluoroionophore-based optodes for seawater salinity measurement;Müller;Anal. Chem.,2017