@article {biagioni2016electron,
	title = {Electron density measurement in gas discharge plasmas by optical and acoustic methods},
	journal = {Journal of Instrumentation},
	volume = {11},
	number = {08},
	year = {2016},
	pages = {C08003},
	publisher = {IOP Publishing},
	author = {Biagioni, Angelo and Anania, MP and Bellaveglia, Marco and Chiadroni, E and Cianchi, Antonella and Di Giovenale, Domenico and Di Pirro, G and Ferrario, Massimo and Filippi, Francesco and Mostacci, Andrea and others}
}
