IPhO 2012: how magnets curve the waterKalda, Jaan; Kikas, Jaak; Heidelberg, M.; Ainsaar, Ain; Lõhmus, RünnoEuropean journal of physics2013 / p. S35-S48 : ill
The 'Physics Cup' : interesting problems are difficultKalda, JaanEuropean journal of physics2013 / p. S3-S-14 : ill