غانم محمود أ. Universal Kriging Prediction of nonstationary Spatial Stochastic Process. IRAQI JOURNAL OF STATISTICAL SCIENCES, [S. l.], v. 10, n. 1, p. 147–170, 2010. DOI: 10.33899/iqjoss.2010.029098. Disponível em: https://tanmiyat.uomosul.edu.iq/index.php/stats/article/view/29131. Acesso em: 5 sep. 2025.