BIRKET-SMITH, J. Serial Sections of Small Fossils. A New Method. Danmarks Geologiske Undersøgelse IV. Række, [S. l.], v. 3, n. 7, p. 1–32, 1950. DOI: 10.34194/raekke4.v3.6995. Disponível em: https://geusjournals.org/index.php/raekke4/article/view/6995. Acesso em: 18 may. 2024.