نذير اسماعيل قاسم م. Universal Cokriging of Non stationary Spatial Stochastic Process with an Application to Wells Data in Wana District North of Iraq. IRAQI JOURNAL OF STATISTICAL SCIENCES, [S. l.], v. 13, n. 3, p. 217–238, 2013. DOI: 10.33899/iqjoss.2013.081236. Disponível em: https://tanmiyat.uomosul.edu.iq/index.php/stats/article/view/29334. Acesso em: 6 sep. 2025.