1. C.K. Ho, A. Robinson, D.R. Miller, M.J. Davis, Sensors (Basel) 5(2), 4 (2005)
2. Draft Roadmap for Next Generation Air Monitoring (2013) EPA’s Next Generation Air Monitoring Workshop Series Air Sensors 2013: Data Quality and Applications. EPA’s Research Triangle Park Campus, North Carolina. https://sites.google.com/site/airsensors2013/final-materials. https://docs.google.com/viewer?a=v&pid=sites&srcid=ZGVmYXVsdGRvbWFpbnxhaXJzZW5zb3JzMjAxM3xneDo1MzdiYTNmYjVkOGQxMDJk. Accessed 23 Sept 2020
3. M.J. McGrath, C.N. Scanaill, Environmental Monitoring for Health and Wellness. In: Sensor Technologies (Apress, Berkeley, CA, 2013)
4. H. Hayat, T. Griffiths, D. Brennan, R.P. Lewis, M. Barclay, C. Weirman, B. Philip, J.R. Searle, Sensors 19, 3648 (2019)
5. T.H. Gfroerer, In encyclopedia of analytical chemistry, in McGuire. ed. by R.A. Meyers (John Wiley and Sons, Newyork, 2006)