@book { ParticipatoryPlanningofSustainableDevelopmentProjects,
    title = "Participatory Planning of Sustainable Development Projects",
    subtitle = "A Practical Guide for the Field Worker",
    author = "Horst Friedrich {Rolly}",
    year = "2001",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1092064"
}