Media 1: Quick and easy measurement of particle size of Brownian particles and plankton in water using a self-mixing laser SudoSeiichi MiyasakaYoshihiko OtsukaKenju TakahashiYohei OishiTomohiko KoJing-Yuan 2006 Originally published in Optics Express on 06 February 2006 (oe-14-3-1044)