FALLET CLÉMENT ET AL: 'A new method to achieve tens of nm axial super-localization based on conical diffraction PSF shaping', PROGRESS IN BIOMEDICAL OPTICS AND IMAGING, SPIE - INTERNATIONAL SOCIETY FOR OPTICAL ENGINEERING, BELLINGHAM, WA, US, vol. 9331, 9 March 2015 (2015-03-09), pages 93310Q - 93310Q, XP060049277, ISSN: 1605-7422, ISBN: 978-1-5106-0027-0, DOI: 10.1117/12.2077712