ZVIRGZDIŅŠ, Indulis. The Life of Marine Engineer Officer Edgars Oto Pinka (1895–1941). History of Engineering Sciences and Institutions of Higher Education, Riga, Latvia, v. 7, p. 47–64, 2023. DOI: 10.7250/HESIHE.2023.004. Disponível em: https://hesihe-journals.rtu.lv/hesihe/article/view/HESIHE.2023.004.. Acesso em: 6 mar. 2026.