@incollection{Morozov18, author = {Albert Morozov}, title = {Periodic Perturbations: Parametric Systems}, booktitle = {Perturbation Methods with Applications in Science and Engineering}, publisher = {IntechOpen}, address = {Rijeka}, year = {2018}, editor = {İlkay Bakırtaş}, chapter = {5}, doi = {10.5772/intechopen.79513}, url = {https://doi.org/10.5772/intechopen.79513} }