While his predecessors and contemporaries used suppositions as much as facts, Lucius founded his estimates on genuine sources. At the end of the book, he included certain valuable historical sources and a bibliography with his comments. The book had six historical maps.
While his predecessors and contemporaries frequently combined speculation with actual data, Lucius grounded his assessments in authentic sources. At the book's conclusion, he added some significant historical materials and a bibliography of his remarks. The work included six historical maps.