Karimi, Ebrahim Influence of generalized focusing of few-cycle Gaussian pulses in attosecond pulse generation. [electronic resource] - Optics express Oct 2013 - 24991-9 p. digital Publication Type: Journal Article; Research Support, Non-U.S. Gov't ISSN: 1094-4087 Standard No.: 10.1364/OE.21.024991 doi