RAMSEY, C.; GRIFFITHS, P. A.; STOKES, T. R. Multi-rotor unmanned aerial vehicles (UVAs) and high-resolution compact digital cameras: a promising new method for monitoring changes to surface karst resources. Acta Carsologica, Ljubljana, Slovenija, v. 43, n. 2-3, 2014. DOI: 10.3986/ac.v43i2.625. Disponível em: https://ojs.zrc-sazu.si/carsologica/article/view/625. Acesso em: 3 may. 2024.