UGRIN, Nándor. GENAUIGKEITSANALYSE DER ORTHOPHOTOSKOPISCHEN VERFAHREN Periodica Polytechnica Civil Engineering, [S. l.], v. 27, n. 3-4, p. 227–238, 1983. Disponível em: https://pp.bme.hu/ci/article/view/4040. Acesso em: 29 apr. 2025.