Relationships between particles, cloud condensation nuclei and cloud droplet activation during the third Pallas Cloud Experiment - Anttila, T.; Brus, D.; Jaatinen, A.; Hyvärinen, A.-P.; Kivekäs, N.; Romakkaniemi, S.; Komppula, M.; Lihavainen, H. (Atmos. Chem. Phys., 2012)