Number concentrations and modal structure of indoor/outdoor fine particles in four European cities.

Lazaridis, M.; Eleftheriadis, K.; Zdimal, V.; Schwarz, J.; Wagner, Z.; Ondracek, J.; Drossinos, Y.; Glytsos, T.; Vratolis, S.; Tørseth, K.; Moravec, P.; Hussein, T.; Smolik, J.