@article{Svensson2013, author = "J Svensson and J Ström and M Hansson and H Lihavainen and V-M Kerminen", title = "{(a)–(e) Circle charts from each sampling event with the area of the circle representing the samples' corresponding EC concentration}", year = "2013", month = "7", url = "https://iop.figshare.com/articles/figure/_a_e_Circle_charts_from_each_sampling_event_with_the_area_of_the_circle_representing_the_samples_cor/1011499", doi = "10.6084/m9.figshare.1011499.v1" }