(untitled) - Urtāns, Juris (. Aerial archaeology. - Amsterdam [u.a.] : IOS Press [u.a.], 2002. - VIII, 376 S.. - ISBN 1-58603-184-8, keywords = , pages = 116-121, 2 Abb., title = A Post Medieval Dockyard in Ventspils (Latvia): From the Air, in the Ground and Underwater, uniqueid = HEB392109514, year = 2002)