The history of X-ray free-electron lasers p. 659 C. Pellegrini Published online: 19 June 2012 DOI: 10.1140/epjh/e2012-20064-5 AbstractPDF (3.014 MB)
Rights and wrongs of the temporal solar radius variability p. 709 J.P. Rozelot and C. Damiani Published online: 06 June 2012 DOI: 10.1140/epjh/e2012-20030-4 AbstractPDF (1.476 MB)
The history of astrometry p. 745 Michael Perryman Published online: 08 October 2012 DOI: 10.1140/epjh/e2012-30039-4 AbstractPDF (1.776 MB)
Open Access History of the discovery of the stimulated Raman effect at the Hughes research laboratories p. 793 Gisela Eckhardt Published online: 23 October 2012 DOI: 10.1140/epjh/e2012-30025-9 AbstractPDF (397.5 KB)