@book { EssaysinNonlinearEconomicDynamics,
    title = "Essays in Nonlinear Economic Dynamics",
    author = "Richard M. {Goodwin} and Peter {Flaschel}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1076857"
}