[1]
K. Petelczyc, J. Ares Garcia, S. Bará, Z. Jaroszewicz, A. Kołodziejczyk, and M. Sypek, “Presbyopia compensation with a light sword optical element of a variable diameter”, Photonics Lett. Pol., vol. 1, no. 2, pp. pp. 55–57, Jun. 2009.