Kleinhans M.; Verkade A.; van Wessel T.; Bastings M.; Marra W.; van Gog T.; van Westrenen W.; Reichwein M. Moon, Mars and Mundus: primary school children discover the nature and science of planet Earth from experimentation and extra-terrestrial perspectives. Netherlands Journal of Geosciences, v. 95, n. 2, p. 203-214, 13 Feb. 2015.