Articles The ECOMA 2007 campaign: rocket observations and numerical modelling of aerosol particle charging and plasma depletion in a PMSE/NLC layer (2009) Brattli, Alvin Andreas, Lie-Svendsen, Øystein, Svenes, Knut Ragnar, Hoppe, Ulf-Peter, Strelnikova, I., Rapp, M., Latteck, R., Friedrich, M.