@book { DevelopmentofFieldPropagationModelforUrbanArea,
    title = "Development of Field Propagation Model for Urban Area",
    author = "Purnima K {Sharma} and Dinesh {Sharma} and R.K. {Singh}",
    year = "2017",
    publisher = "Anchor Academic Publishing",
    address = "Hamburg, Germany",
    url = "https://m.anchor-publishing.com/document/352719"
}