@book { ColorandLightintheWritingsofEduardvonKeyserling,
    title = "Color and Light in the Writings of Eduard von Keyserling",
    author = " {Richard A. Weber}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "New York, United States of America",
    url = "https://www.peterlang.com/document/1078742"
}