An Efficient Method for Stamps Recognition Using Histogram Moment with Haar Wavelet Sub-bands. Iraqi Journal of Science, [S. l.], v. 62, n. 9, p. 3182–3195, 2021. DOI: 10.24996/ijs.2021.62.9.32. Disponível em: https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/2981.. Acesso em: 7 apr. 2025.