@article{Garland2020, author = "Nicky Garland", title = "{Hadrian's Wall - Frontier system}", year = "2020", month = "3", url = "https://data.ncl.ac.uk/articles/dataset/Hadrian_s_Wall_-_Frontier_system/11855592", doi = "10.25405/data.ncl.11855592.v1" }