Ślęczka M, Bechler A. Atom ionization by strong laser pulses - gauge invariant description. Photonics Lett. Pol. [Internet]. 2013 Dec. 31 [cited 2024 Dec. 4];5(4):pp. 155-57. Available from: http://photonics.pl/PLP/index.php/letters/article/view/5-55