Roman lighthouse at Dover Castle

1. Lamprecht, Heinz-Otto (1993): Opus Caementitium. Bautechnik der Römer. 4^th edition, Beton-Verlag, Düsseldorf (Germany), pp. 149.
2. Booth, Kevin (2007): The Roman Pharos at Dover Castle. In: English Heritage Historical Review, v. 2, n. 1 (June 2007), pp. 8-21.

   https://doi.org/10.1179/175201607797644103