@incollection{Kovachev11,
author = {Kamen Kovachev and Lubomir M. Kovachev},
title = {Linear and Nonlinear Femtosecond Optics in Isotropic Media - Ionization-Free Filamentation},
booktitle = {Laser Systems for Applications},
publisher = {IntechOpen},
address = {Rijeka},
year = {2011},
editor = {Krzysztof Jakubczak},
chapter = {11},
doi = {10.5772/23213},
url = {https://doi.org/10.5772/23213}
}