@misc{the+poles+method+for+higher+order+linear+time+varying+systems,
    author = {Siwczyński, Maciej i Jaraczewski, Marcin},
    title = {The poles method for higher-order linear time-varying systems},
    journal = {Technical Transactions},
    address = {Kraków},
    publisher = {<a href=\"http://www.wydawnictwo.pk.edu.pl/\" target=\"_blank\">Wydawnictwo PK</a>},
    date = {2015},
    number = {Y. 112, iss. 4-M}
}