Formation of zinc oxalate from zinc white in various oil binding media: the influence of atmospheric carbon dioxide by reaction with 13CO2. - Simonsen, Kim Pilkjær; Poulsen, Josephine Niemann; Vanmeert, Frederik; Ryhl-Svendsen, Morten; Bendix, Jesper; Sanyova, Jana; Janssens, Koen; Mederos-Henry, Francisco (Heritage Science, 2020)