ZVIRGZDIŅŠ, Indulis. Pēteris Elksnītis (1879–1963) – One of The Founders of Dairy Farming in Latvia. History of Engineering Sciences and Institutions of Higher Education, Riga, Latvia, v. 8, p. 46–66, 2024. DOI: 10.7250/HESIHE.2024.004. Disponível em: https://hesihe-journals.rtu.lv/hesihe/article/view/HESIHE.2024.004.. Acesso em: 6 mar. 2026.