Saghafi, S., Becker, K., Hahn, C., & Dodt, H. U. (2012). Recent development in light Ultramicroscopy using aspherical optical elements. In L. Mazuray, R. Wartmann, A. P. Wood, M. C. de la Fuente, J.-L. M. Tissot, J. M. Raynor, D. G. Smith, F. Wyrowski, A. Erdmann, T. E. Kidger, S. David, & P. Benitez (Eds.), Optical Systems Design 2012 (p. 1). SPIE. https://doi.org/10.1117/12.980904