Kurt Bernardo Wolf. and Guillermo Krötzsch. (1996) “Lie-Hamilton geometric aberration optics: Symmetries and symbolic computation”, Revista Mexicana de Física, 43(6), pp. 887–894. Available at: https://rmf.smf.mx/ojs/index.php/rmf/article/view/2712 (Accessed: 30 June 2024).