Campbell, Louisa; Smith, Margaret (2022년 10월 5일). “Multi-technique analysis of pigments on sandstone sculptures: Renaissance re-painting of a Roman relief”. 《Heritage Science》 (Springer Science and Business Media LLC) 10 (1). doi:10.1186/s40494-022-00790-7. ISSN2050-7445.
Campbell, Louisa; Smith, Margaret (2022년 10월 5일). “Multi-technique analysis of pigments on sandstone sculptures: Renaissance re-painting of a Roman relief”. 《Heritage Science》 (Springer Science and Business Media LLC) 10 (1). doi:10.1186/s40494-022-00790-7. ISSN2050-7445.