Article Raposo, Pedro M. P. (2013)
Surveyors of the Promised Land: Hydrographic Engineers and the Techno-Scientific Resurgence of the Portuguese Overseas Empire (C. 1900--1935). HOST: Journal of History of Science and Technology (p. 85). (/isis/citation/CBB001321195/) unapi

Article Bonitàcio, Vitor; Malaquias, Isabel; Fernandes, Joǎo (2008)
Ernesto Vasconcellos' Astronomia Photographica: The Earliest Popular Book on Astronomical Photography?. Journal of Astronomical History and Heritage (p. 116). (/isis/citation/CBB001034772/) unapi

Book Sarjeant, William A.S. (1987)
Geologists and the history of geology: An international bibliography from the origins to 1978. Supplement, 1979-1984 and additions. (/isis/citation/CBB000052545/) unapi