@book { ABoostingbasedQuantileAutoregressiveTreeModelfortheCOVID19TimeSeries,
    title = "A Boosting-based Quantile Autoregressive Tree Model for the COVID-19 Time Series",
    author = "Yang {Liu}",
    year = "2020",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    url = "https://www.hausarbeiten.de/document/923166"
}