@incollection{Lembrikov19,
author = {Boris I. Lembrikov},
title = {Introductory Chapter: Nonlinear Optical Phenomena},
booktitle = {Nonlinear Optics},
publisher = {IntechOpen},
address = {Rijeka},
year = {2019},
editor = {Boris I. Lembrikov},
chapter = {1},
doi = {10.5772/intechopen.83718},
url = {https://doi.org/10.5772/intechopen.83718}
}