@article {fibich2005self,
	title = {Self-focusing distance of very high power laser pulses},
	journal = {Optics express},
	volume = {13},
	number = {15},
	year = {2005},
	pages = {5897{\textendash}5903},
	publisher = {Optica Publishing Group},
	author = {Fibich, Gadi and Eisenmann, Shmuel and Ilan, Boaz and Erlich, Yossi and Fraenkel, Moshe and Henis, Zohar and Gaeta, Alexander L and Zigler, Arie}
}
